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Topic · Pediatrics, Perinatology and Child Health

Assisted Reproductive Technology and Twin Pregnancy

Assisted Reproductive Technology and Twin Pregnancy is a research topic within Pediatrics, Perinatology and Child Health. Science Explorer counts 34k research works in it since 1950. 10.2% of them reached the world's top 10% most cited for their field and year.

This cluster of papers explores the impact of assisted reproductive technology, particularly in vitro fertilization, on perinatal outcomes, including the risk of birth defects, imprinting disorders, and neurological sequelae. It also delves into the management of twin pregnancies, the use of fetoscopic laser coagulation, and the benefits of selective embryo transfer.

  • Assisted Reproductive Technology
  • In Vitro Fertilization
  • Twin Pregnancy
  • Birth Defects
  • Perinatal Outcome
  • Monozygotic Twins
  • Imprinting Disorders
  • Fetoscopic Laser Coagulation
  • Selective Embryo Transfer
  • Neurodevelopmental Outcome
Research works
34k
fractional, since 1950
In the world top 10%
3.5k
per year above
Top-10% rate
10.2%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+1%
the tick is no change
Largest producer
United States
35% of the 10 largest, 2022-now
Assisted Reproductive Technology and Twin Pregnancy

This ranks research output and citation impact. It says nothing about the quality of diagnosis, treatment or care.

Which countries lead Assisted Reproductive Technology and Twin Pregnancy research?

By volume, the United States and China publish the most (1.2k and 603 works in 2022-now).

By volume, 2022-now

  1. 1 United States 1.2k works
  2. 2 China 603 works
  3. 3 India 361 works
  4. 4 United Kingdom 248 works
  5. 5 Italy 182 works
  6. 6 Türkiye 179 works
  7. 7 Germany 147 works
  8. 8 Spain 142 works
  9. 9 Australia 133 works
  10. 10 Canada 132 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

United States: 35.2%China: 18.4%India: 11.0%United Kingdom: 7.5%6 others listed: 27.9%35%largest
United States1,158 · 35.2%China603 · 18.4%India361 · 11.0%United Kingdom248 · 7.5%6 others listed915 · 27.9%

Shares of the rows listed above, not of the whole node.

Which institutions lead Assisted Reproductive Technology and Twin Pregnancy research?

By volume in 2022-now, Harvard University publishes the most Assisted Reproductive Technology and Twin Pregnancy research, followed by Tel Aviv University and Peking University.

By volume, 2022-now

  1. 1 Harvard UniversityUnited States 60 works
  2. 2 Tel Aviv UniversityIsrael 40 works
  3. 3 Peking UniversityChina 30 works
  4. 4 Zhengzhou UniversityChina 27 works
  5. 5 University of TorontoCanada 25 works
  6. 6 Shanghai Jiao Tong UniversityChina 25 works
  7. 7 Johns Hopkins UniversityUnited States 25 works
  8. 8 McGill UniversityCanada 24 works
  9. 9 All India Institute of Medical SciencesIndia 23 works
  10. 10 Baylor College of MedicineUnited States 22 works

Who are the leading researchers in Assisted Reproductive Technology and Twin Pregnancy?

The most-cited researchers publishing on Assisted Reproductive Technology and Twin Pregnancy include George Davey Smith, Ali H. Mokdad and Zulfiqar Ahmed Bhutta.

  1. 1 George Davey Smith United Kingdom 435k citations
  2. 2 Ali H. Mokdad United States 429k citations
  3. 3 Zulfiqar Ahmed Bhutta Pakistan 371k citations
  4. 4 Cyrus Cooper United Kingdom 342k citations
  5. 5 Jun Wang China 340k citations
  6. 6 Yousef Saleh Khader Jordan 274k citations
  7. 7 Patrick M. Bossuyt Netherlands 270k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Assisted Reproductive Technology and Twin Pregnancy?

The most cited paper in Assisted Reproductive Technology and Twin Pregnancy is "Pregnancies after intracytoplasmic injection of single spermatozoon into an oocyte" (Gianpiero D. Palermo, 1992), with 3,607 citations. Next come "BIRTH AFTER THE REIMPLANTATION OF A HUMAN EMBRYO" (2,624) and "International estimates of infertility prevalence and treatment-seeking: potential need and demand for infertility medical care" (2,507).

Most cited papers
#PaperReleasedCitations
1 Pregnancies after intracytoplasmic injection of single spermatozoon into an oocyte Gianpiero D. Palermo · The Lancet Jul 1992 3,607
2 BIRTH AFTER THE REIMPLANTATION OF A HUMAN EMBRYO P. C. Steptoe, Robert Edwards · The Lancet Aug 1978 2,624
3 International estimates of infertility prevalence and treatment-seeking: potential need and demand for infertility medical care Jacky Boivin, Laura Bunting, John A. Collins et al. · Human Reproduction Open access 21 Mar 2007 2,507
4 Effective targeted gene ‘knockdown’ in zebrafish Aidas Nasevicius, Stephen C. Ekker · Nature Genetics Oct 2000 2,503
5 National, Regional, and Global Trends in Infertility Prevalence Since 1990: A Systematic Analysis of 277 Health Surveys Maya Nina Mascarenhas, Seth Flaxman, Ties Boerma et al. · PLoS Medicine Open access 18 Dec 2012 2,382
All 99 most cited papers, with filters and sorting

Where is Assisted Reproductive Technology and Twin Pregnancy research done?

The largest centres of Assisted Reproductive Technology and Twin Pregnancy research in 2022-now are London (United Kingdom), New York (United States), Beijing (China) and Istanbul (Türkiye). Among places with at least 20 works in it, it is an unusually large share of all research in Tel Aviv.

Largest cities, 2022-now

  1. 1 LondonUnited Kingdom 91 works
  2. 2 New YorkUnited States 88 works
  3. 3 BeijingChina 63 works
  4. 4 IstanbulTürkiye 58 works
  5. 5 GuangzhouChina 50 works
  6. 6 BostonUnited States 49 works
  7. 7 MelbourneAustralia 47 works
  8. 8 ShanghaiChina 46 works
  9. 9 TehranIran 42 works
  10. 10 MoscowRussia 41 works

Where it is the local speciality

  1. Tel AvivIL · 26.5 works6.7×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Assisted Reproductive Technology and Twin Pregnancy than the world average.

See Assisted Reproductive Technology and Twin Pregnancy on the map

Where is the best place to study Assisted Reproductive Technology and Twin Pregnancy?

Among universities, judged by research, Sapienza University of Rome, Harvard University and Monash University score highest, combining citation excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 22%fractional works in this field (log) →share of work in the world top 10% →Sapienza University …Monash UniversityUniversity of Copenh…Harvard University
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Citation excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Sapienza University of RomeItaly 64.740.2%2.4×13 +93.8%
2Harvard UniversityUnited States 64.014.3%4.1×60 -2.4%
3Monash UniversityAustralia 63.020.6%4.9×22 +27.6%
4University of CopenhagenDenmark 60.515.5%4.3×18 +22.5%
5Karolinska InstitutetSweden 57.033.5%4.5×12 -17.9%
6Peking UniversityChina 55.216.4%3.3×30 +14.8%
7University of AmsterdamNetherlands 54.531.5%3.1×8 +15.7%
8Zhengzhou UniversityChina 53.719.7%4.9×27 +8.3%
9Johns Hopkins UniversityUnited States 53.011.6%3.5×25 +39.7%
10University of TorontoCanada 52.916.7%2.7×25 -2.1%

Universities only. The score blends citation excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Assisted Reproductive Technology and Twin Pregnancy, country by country

Is Assisted Reproductive Technology and Twin Pregnancy research growing?

Output in 2022-2025 was 1% higher than in 2018-2021, peaking in 2021. The fastest-growing topics are Assisted Reproductive Technology and Twin Pregnancy.

still counting19801990200020102020
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 Assisted Reproductive Technology and Twin Pregnancy as a percentage of every work published that year, 0.024% in 2024.

still counting0.020%0.040%0.060%Assisted Reproductive Technology and Twin Pregnancy0.019% in 202519801990200020102020

Fractional works of Assisted Reproductive Technology and Twin Pregnancy 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.

still counting5%10%15%Assisted Reproductive Technology and Twin Pregnancy10.8% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

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