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Hospital / health system · Sofia · Bulgaria

Tokuda Hospital

In research, Tokuda Hospital stands highest in Medicine (#6,900 of 8,541 worldwide) and Health Sciences (#8,423 of 9,902 worldwide), 2022-now. Relative to its size it is most specialised in Surgery (Surgery is 7.6× its share of world research).

tokudabolnica.bg/enROR OpenAlex
World rank, 2022-now
#21,524
of 22,385 · #31,121 all time
Rank in Bulgaria
#62
of 64
Research works
339
▲ 56% vs 2018-21
Citations
2.3k
6.7 per fractional work
Top-10% rate
3.7%
all institutions 10.0%
vs its own fields
0.87×
1.00× is exactly expected
Open access
58%
world 40%
International
25%
world 18%
Tokuda Hospital

What is Tokuda Hospital known for in research?

The fields where it stands highest, 2022-now, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
MedicineField #6,900 of 8,541 3.1%94 #10739
Health SciencesDomain #8,423 of 9,902 3.1%95 #12952

Each strip is that field's whole ranked pool, with the notch where Tokuda Hospital sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Tokuda Hospital work in?

In 2022-now, 86% of research at Tokuda Hospital is in Health Sciences, 11% in Life Sciences. Its largest fields are Medicine (84%), Biochemistry, Genetics and Molecular Biology (4%), Immunology and Microbiology (3%). It does 3.4× the world's share of Health Sciences.

Health Sciences: 108 fractional works · 85.5% of its workMedicine: 106 fractional works · 84.0% of its workSurgery: 22 fractional works · 17.7% of its workPulmonary and Respiratory Medicine: 15 fractional works · 11.5% of its workCardiology and Cardiovascular Medicine: 10 fractional works · 7.9% of its workEpidemiology: 8 fractional works · 6.4% of its workOncology: 7 fractional works · 5.5% of its workNeurology: 4 fractional works · 3.1% of its workHepatology: 4 fractional works · 3.0% of its workDermatology: 4 fractional works · 2.8% of its workRheumatology: 3 fractional works · 2.7% of its workInfectious Diseases: 3 fractional works · 2.3% of its workPhysiology: 3 fractional works · 2.3% of its workPathology and Forensic Medicine: 3 fractional works · 2.2% of its workPublic Health, Environmental and Occupational Health: 2 fractional works · 1.9% of its workRadiology, Nuclear Medicine and Imaging: 2 fractional works · 1.8% of its workEndocrinology, Diabetes and Metabolism: 2 fractional works · 1.5% of its workPharmacology: 1 fractional works · 1.1% of its workReproductive Medicine: 1 fractional works · 1.0% of its workGenetics: 1 fractional works · 0.9% of its workImmunology and Allergy: 1 fractional works · 0.9% of its workOphthalmology: 1 fractional works · 0.8% of its workPediatrics, Perinatology and Child Health: 1 fractional works · 0.8% of its workHematology: 1 fractional works · 0.8% of its workNephrology: 1 fractional works · 0.7% of its workObstetrics and Gynecology: 1 fractional works · 0.7% of its workPsychiatry and Mental health: 1 fractional works · 0.7% of its workGastroenterology: 1 fractional works · 0.5% of its workEmergency Medicine: 1 fractional works · 0.4% of its workOtorhinolaryngology: 0 fractional works · 0.4% of its workOrthopedics and Sports Medicine: 0 fractional works · 0.3% of its workBiochemistry: 0 fractional works · 0.2% of its workUrology: 0 fractional works · 0.2% of its workComplementary and alternative medicine: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.8% of its workHealth Professions: 1 fractional works · 1.0% of its workGeneral Health Professions: 1 fractional works · 0.6% of its workSmaller subfields together: 1 fractional works · 0.4% of its workDentistry: 0 fractional works · 0.4% of its workOral Surgery: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workVeterinary: 0 fractional works · 0.1% of its workNursing: 0 fractional works · 0.0% of its workLife Sciences: 14 fractional works · 11.0% of its workBiochemistry, Genetics and Molecular Biology: 5 fractional works · 4.0% of its workGenetics: 2 fractional works · 1.5% of its workMolecular Biology: 1 fractional works · 0.9% of its workCancer Research: 1 fractional works · 0.6% of its workCell Biology: 1 fractional works · 0.4% of its workSmaller subfields together: 1 fractional works · 0.5% of its workImmunology and Microbiology: 4 fractional works · 3.3% of its workImmunology: 2 fractional works · 1.9% of its workApplied Microbiology and Biotechnology: 1 fractional works · 0.6% of its workVirology: 0 fractional works · 0.4% of its workMicrobiology: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workNeuroscience: 3 fractional works · 2.8% of its workCognitive Neuroscience: 2 fractional works · 1.6% of its workCellular and Molecular Neuroscience: 1 fractional works · 0.6% of its workDevelopmental Neuroscience: 0 fractional works · 0.3% of its workEndocrine and Autonomic Systems: 0 fractional works · 0.3% of its workPharmacology, Toxicology and Pharmaceutics: 1 fractional works · 0.7% of its workPharmaceutical Science: 1 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.0% of its workAgricultural and Biological Sciences: 0 fractional works · 0.3% of its workPhysical Sciences: 3 fractional works · 2.5% of its workEngineering: 2 fractional works · 1.4% of its workBiomedical Engineering: 2 fractional works · 1.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEnvironmental Science: 1 fractional works · 0.5% of its workEcology: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workComputer Science: 0 fractional works · 0.4% of its workComputer Vision and Pattern Recognition: 0 fractional works · 0.4% of its workChemistry: 0 fractional works · 0.1% of its workEarth and Planetary Sciences: 0 fractional works · 0.1% of its workSocial Sciences: 1 fractional works · 1.0% of its workSocial Sciences: 1 fractional works · 0.5% of its workSociology and Political Science: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEconomics, Econometrics and Finance: 0 fractional works · 0.3% of its workEconomics and Econometrics: 0 fractional works · 0.3% of its workPsychology: 0 fractional works · 0.2% of its workBusiness, Management and Accounting: 0 fractional works · 0.0% of its workALL ITS WORKTokuda Hospital126fractional works, 2022-now
Life Sciences11%Physical Sciences2%Health Sciences86%Social Sciences1%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 20 fields, with their numbers
    1. Medicine10684.0%
    2. Health Professions11.0%
    3. Dentistry00.4%
    4. Veterinary00.1%
    5. Nursing00.0%
    1. Biochemistry, Genetics and Molecular Biology54.0%
    2. Immunology and Microbiology43.3%
    3. Neuroscience32.8%
    4. Pharmacology, Toxicology and Pharmaceutics10.7%
    5. Agricultural and Biological Sciences00.3%
    1. Engineering21.4%
    2. Environmental Science10.5%
    3. Computer Science00.4%
    4. Chemistry00.1%
    5. Earth and Planetary Sciences00.1%
    6. Materials Science00.0%
    1. Social Sciences10.5%
    2. Economics, Econometrics and Finance00.3%
    3. Psychology00.2%
    4. Business, Management and Accounting00.0%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Tokuda Hospital specialise in?

Where its research is concentrated relative to its size: Surgery takes 7.6× the share of its output that it takes of world research.

  1. SurgerySubfield · 22.4 works7.6×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.07× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.75× its world share, 5 worksBiochemistry, Geneti…Immunology and Microbiology: 3.23× its world share, 4 worksImmunology and Micro…Neuroscience: 1.70× its world share, 4 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 2.09× its world share, 1 worksPharmacology, Toxico…Chemistry: 0.08× its world share, 0 worksChemistryComputer Science: 0.05× its world share, 0 worksComputer ScienceEarth and Planetary Sciences: 0.03× its world share, 0 worksEarth and Planetary …Engineering: 0.09× its world share, 2 worksEngineeringEnvironmental Science: 0.10× its world share, 1 worksEnvironmental ScienceDentistry: 0.75× its world share, 0 worksDentistryHealth Professions: 0.39× its world share, 1 worksHealth ProfessionsMedicine: 4.37× its world share, 106 worksMedicineNursing: 0.07× its world share, 0 worksNursingVeterinary: 0.78× its world share, 0 worksVeterinaryBusiness, Management and Accounting: 0.01× its world share, 0 worksBusiness, Management…Economics, Econometrics and Finance: 0.15× its world share, 0 worksEconomics, Econometr…Psychology: 0.06× its world share, 0 worksPsychologySocial Sciences: 0.04× its world share, 1 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Medicine, 4.4×. Every wedge is a field page.

All 19 fields, with their numbers
  1. Medicine4.37×106 works
  2. Immunology and Microbiology3.23×4 works
  3. Pharmacology, Toxicology and Pharmaceutics2.09×1 works
  4. Neuroscience1.70×4 works
  5. Veterinary0.78×0 works
  6. Biochemistry, Genetics and Molecular Biology0.75×5 works
  7. Dentistry0.75×0 works
  8. Health Professions0.39×1 works
  9. Economics, Econometrics and Finance0.15×0 works
  10. Environmental Science0.10×1 works
  11. Engineering0.09×2 works
  12. Chemistry0.08×0 works
  13. Agricultural and Biological Sciences0.07×0 works
  14. Nursing0.07×0 works
  15. Psychology0.06×0 works
  16. Computer Science0.05×0 works
  17. Social Sciences0.04×1 works
  18. Earth and Planetary Sciences0.03×0 works
  19. Business, Management and Accounting0.01×0 works

Who are the top researchers at Tokuda Hospital?

Ranked on the quality score, VASSIL BORISLAVOV TRAYKOV, Razvigor Darlenski and Валери Гелев lead among researchers whose main affiliation is Tokuda Hospital.

  1. 1 VASSIL BORISLAVOV TRAYKOV Bulgaria · #213,968 worldwide 9k citations · 120 works
  2. 2 Razvigor Darlenski Bulgaria · #799,310 worldwide 3.4k citations · 136 works
  3. 3 Валери Гелев Bulgaria · #935,880 worldwide 4.3k citations · 38 works
  4. 4 D. Marchov Bulgaria · #1,939,622 worldwide 300 citations · 18 works
  5. 5 Natalia Stoeva Bulgaria · #2,478,309 worldwide 173 citations · 22 works
  6. 6 R. Balabanska Bulgaria · #2,625,861 worldwide 886 citations · 16 works
  7. 7 Toma Yuriev Spiriev Bulgaria · #2,638,884 worldwide 1.4k citations · 97 works
  8. 8 Ivan Tishkov Bulgaria · #2,670,167 worldwide 196 citations · 36 works
  9. 9 Irina Boeva Bulgaria · #2,848,611 worldwide 225 citations · 18 works
  10. 10 Ivan Bogdanov Bulgaria · #3,201,854 worldwide 261 citations · 16 works
All ranked researchers at Tokuda Hospital

What are the most cited papers from Tokuda Hospital?

The most cited paper from Tokuda Hospital is "A Randomized, Controlled Trial of the Pan-PPAR Agonist Lanifibranor in NASH" (Sven Francque et al., 2021), with 778 citations. Next come "A randomized multicentre trial to compare revascularization with optimal medical therapy for the treatment of chronic total coronary occlusions" (588) and "KCNQ2 encephalopathy: Emerging phenotype of a neonatal epileptic encephalopathy" (520).

Most cited papers
#PaperReleasedCitations
1 A Randomized, Controlled Trial of the Pan-PPAR Agonist Lanifibranor in NASH Sven Francque et al. · New England Journal of Medicine Open access 20 Oct 2021 778
2 A randomized multicentre trial to compare revascularization with optimal medical therapy for the treatment of chronic total coronary occlusions Gerald S. Werner et al. · European Heart Journal Open access 4 Apr 2018 588
3 KCNQ2 encephalopathy: Emerging phenotype of a neonatal epileptic encephalopathy Sarah Weckhuysen et al. · Annals of Neurology 10 Oct 2011 520
4 European Heart Rhythm Association (EHRA) international consensus document on how to prevent, diagnose, and treat cardiac implantable electronic device infections—endorsed by the Heart Rhythm Society (HRS), the Asia Pacific Heart Rhythm Society (APHRS), the Latin American Heart Rhythm Society (LAHRS), International Society for Cardiovascular Infectious Diseases (ISCVID) and the European Society of Carina Blomström‐Lundqvist et al. · EP Europace Open access 20 Aug 2019 425
5 Placebo-Controlled Trial of an Oral BTK Inhibitor in Multiple Sclerosis Xavier Montalbán, Douglas Lorne Arnold, Martin S. Weber et al. · New England Journal of Medicine Open access 10 May 2019 326
All 57 most cited papers, with filters and sorting

Which keywords describe research at Tokuda Hospital?

By fractional works in 2022-now, weighted toward what it does more of than the world: Epidemiology, Diagnosis, Chemotherapy, Treatment, Guidelines, Surgical Management, Immunotherapy and Cholangiocarcinoma.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Epidemiology16▲ 3.1×62 topics
  2. Diagnosis8▲ 6.8×24 topics
  3. Treatment8▲ 5.0×27 topics
  4. Chemotherapy7▲ 8.0×16 topics
  5. Inflammation7▲ 2.6×26 topics
  6. Immunotherapy6▲ 6.4×14 topics
  7. Guidelines5▲ 9.1×8 topics
  8. Surgical Management5▲ 11×15 topics
  9. Cholangiocarcinoma5▲ 47×2 topics
  10. Clinical Practice Guidelines5▲ 6.8×11 topics
  11. Management5▲ 4.7×13 topics
  12. Neoadjuvant Therapy5▲ 16×5 topics
  13. Catheter Ablation5▲ 29×2 topics
  14. Hepatocellular Carcinoma4▲ 17×3 topics
  15. Cholecystitis4▲ 77×1 topic
  16. ERCP4▲ 77×1 topic
  17. Stroke Prevention4▲ 27×2 topics
  18. Tumor Microenvironment4▲ 6.9×5 topics
  19. Complications4▲ 5.8×13 topics
  20. Metabolic Syndrome4▲ 3.6×9 topics
  21. Gemcitabine3▲ 38×1 topic
  22. Pancreatic Cancer3▲ 25×2 topics
  23. Surgical Complications3▲ 34×1 topic
  24. Liver Transplantation3▲ 21×4 topics
  25. Radiofrequency Ablation3▲ 25×2 topics
  26. Anticoagulant Therapy3▲ 20×3 topics
  27. Atrial Fibrillation3▲ 26×2 topics
  28. Insulin Resistance3▲ 5.4×5 topics
  29. Risk Stratification3▲ 32×1 topic
  30. Thromboembolism3▲ 32×1 topic
  31. Prognostic Factors3▲ 5.2×11 topics
  32. Etiology3▲ 34×3 topics
  33. Echocardiography3▲ 7.4×5 topics
  34. Palliative Treatment3▲ 31×2 topics
  35. Alagille Syndrome2▲ 84×1 topic
  36. Biliary Atresia2▲ 84×1 topic
  37. NAFLD2▲ 18×1 topic
  38. NASH2▲ 18×1 topic
  39. Endoscopic Stenting2▲ 42×1 topic
  40. Esophageal Perforation2▲ 42×1 topic

Which research topics does Tokuda Hospital publish most on?

By volume in 2022-now: Gallbladder and Bile Duct Disorders, Pancreatic and Hepatic Oncology Research, Atrial Fibrillation Management and Outcomes and Liver Disease Diagnosis and Treatment.

Gallbladder and Bile Duct Disorders: 4 fractional worksPancreatic and Hepatic Oncology Research: 3 fractional worksAtrial Fibrillation Mana…3Atrial Fibrillation Management and Outcomes: 3 fractional worksLiver Disease Diagnosis …2Liver Disease Diagnosis and Treatment: 2 fractional worksPediatric Hepatobiliary Diseases and Treatments: 2 fractional worksEsophageal and GI Pathology: 2 fractional worksHepatocellular Carcinoma…2Hepatocellular Carcinoma Treatment and Prognosis: 2 fractional worksEEG and Brain-Computer Interfaces: 2 fractional worksCardiac Arrhythmias and Treatments: 2 fractional worksCardiac pacing and defibrillation studies: 2 fractional works
Pulmonary and Respiratory MedicineOncologyCardiology and Cardiovascular MedicineEpidemiology3 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Gallbladder and Bile Duct Disorders Pulmonary and Respiratory Medicine 4 works
  2. 2 Pancreatic and Hepatic Oncology Research Oncology 3 works
  3. 3 Atrial Fibrillation Management and Outcomes Cardiology and Cardiovascular Medicine 3 works
  4. 4 Liver Disease Diagnosis and Treatment Epidemiology 2 works
  5. 5 Pediatric Hepatobiliary Diseases and Treatments Surgery 2 works
  6. 6 Esophageal and GI Pathology Surgery 2 works
  7. 7 Hepatocellular Carcinoma Treatment and Prognosis Hepatology 2 works
  8. 8 EEG and Brain-Computer Interfaces Cognitive Neuroscience 2 works
  9. 9 Cardiac Arrhythmias and Treatments Cardiology and Cardiovascular Medicine 2 works
  10. 10 Cardiac pacing and defibrillation studies Cardiology and Cardiovascular Medicine 2 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available57.5%not open42.5%

World: 40% of research is openly available.

with international co-authors24.7%domestic only75.3%

World: 18% is written across borders.

How has Tokuda Hospital's research output changed?

Output in 2022-2025 was 56% higher than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Tokuda Hospital as a percentage of every work published that year, 0.00049% in 2024.

still counting0.00025%0.00050%0.00075%Tokuda Hospital0.00049% in 202519801990200020102020

Fractional works of Tokuda Hospital over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting5%10%15%all institutions10.0% in 2025Tokuda Hospital3.3% in 20252020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 6.3% in 2020.

Other research institutions in Sofia

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Tokuda Hospital on Science Explorer

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