K. G. Nygren

1.7k total citations · 1 hit paper
22 papers, 1.1k citations indexed

About

K. G. Nygren is a scholar working on Pediatrics, Perinatology and Child Health, Public Health, Environmental and Occupational Health and Reproductive Medicine. According to data from OpenAlex, K. G. Nygren has authored 22 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Pediatrics, Perinatology and Child Health, 7 papers in Public Health, Environmental and Occupational Health and 7 papers in Reproductive Medicine. Recurrent topics in K. G. Nygren's work include Assisted Reproductive Technology and Twin Pregnancy (8 papers), Prenatal Screening and Diagnostics (4 papers) and Ovarian function and disorders (3 papers). K. G. Nygren is often cited by papers focused on Assisted Reproductive Technology and Twin Pregnancy (8 papers), Prenatal Screening and Diagnostics (4 papers) and Ovarian function and disorders (3 papers). K. G. Nygren collaborates with scholars based in Sweden, Denmark and Finland. K. G. Nygren's co-authors include Anja Pinborg, Ulla‐Britt Wennerholm, Liv Bente Romundstad, Kristiina Aittomäki, Viveca Söderström‐Anttila, Anne Loft, Johan Hazekamp, Christina Bergh, Mika Gissler and Aila Tiitinen and has published in prestigious journals such as American Journal of Clinical Nutrition, Human Reproduction and Human Reproduction Update.

In The Last Decade

K. G. Nygren

21 papers receiving 1.1k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Why do singletons conceived after assisted reproduction technology have adverse perinatal outcome? Systematic review and meta-analysis

2012 494 citations Anja Pinborg, Ulla‐Britt Wennerholm et al. Human Reproduction Update profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
K. G. Nygren Sweden	11	921	621	556	195	67	22	1.1k
Shilpi Pandey United Kingdom	6	1.2k 1.3×	781 1.3×	687 1.2×	347 1.8×	112 1.7×	8	1.5k
Zabeena Pandian United Kingdom	14	783 0.9×	866 1.4×	552 1.0×	154 0.8×	91 1.4×	19	1.2k
Ravit Nahum Israel	18	320 0.3×	650 1.0×	614 1.1×	187 1.0×	133 2.0×	62	1.1k
Vidar von Dûring Norway	11	511 0.6×	355 0.6×	280 0.5×	170 0.9×	32 0.5×	24	672
Mason C. Andrews United States	14	342 0.4×	752 1.2×	615 1.1×	194 1.0×	171 2.6×	30	1.1k
Rosa Tur Spain	17	407 0.4×	809 1.3×	641 1.2×	173 0.9×	72 1.1×	36	967
Rob E. Bernardus Netherlands	18	420 0.5×	681 1.1×	508 0.9×	59 0.3×	55 0.8×	32	860
Mary M. Francis United States	13	330 0.4×	402 0.6×	353 0.6×	98 0.5×	65 1.0×	29	604
Daksha Gopal United States	15	677 0.7×	402 0.6×	242 0.4×	241 1.2×	44 0.7×	33	786
Isaac Jacques Kadoch Canada	14	302 0.3×	459 0.7×	343 0.6×	65 0.3×	64 1.0×	39	590

Countries citing papers authored by K. G. Nygren

Since Specialization

Citations

This map shows the geographic impact of K. G. Nygren's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by K. G. Nygren with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites K. G. Nygren more than expected).

Fields of papers citing papers by K. G. Nygren

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by K. G. Nygren. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by K. G. Nygren. The network helps show where K. G. Nygren may publish in the future.

Co-authorship network of co-authors of K. G. Nygren

This figure shows the co-authorship network connecting the top 25 collaborators of K. G. Nygren. A scholar is included among the top collaborators of K. G. Nygren based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with K. G. Nygren. K. G. Nygren is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Henningsen, Anna-Karina Aaris, U. B. Wennerholm, Mika Gissler, et al.. (2014). Risk of stillbirth and infant deaths after assisted reproductive technology: a Nordic study from the CoNARTaS† group. Human Reproduction. 29(5). 1090–1096. 36 indexed citations

Ferraretti, A. P., V. Goossens, Siladitya Bhattacharya, et al.. (2013). Session 23: European and Global ART Monitoring (presentation of the EIM and ICMART data reports). Human Reproduction. 28(suppl 1). i38–i39. 1 indexed citations

Wennerholm, Ulla‐Britt, L.B. Romundstad, C.‐H. Bergh, et al.. (2013). Perinatal outcomes of children born after frozen-thawed embryo transfer: a Nordic cohort study from the CoNARTaS group. Human Reproduction. 28(9). 2545–2553. 280 indexed citations

Pinborg, Anja, Ulla‐Britt Wennerholm, Liv Bente Romundstad, et al.. (2012). Why do singletons conceived after assisted reproduction technology have adverse perinatal outcome? Systematic review and meta-analysis. Human Reproduction Update. 19(2). 87–104. 494 indexed citations breakdown →

Mouzon, J. de, V. Goossens, Siladitya Bhattacharya, et al.. (2011). INVITED SESSION, SESSION 55: EUROPEAN AND GLOBAL ART MONITORING, Wednesday 6 July 2011 08:30 - 09:30. Human Reproduction. 26(Supplement 1). i84–i85. 1 indexed citations

Nelen, W. L. D. M., Rob W. van der Pluijm, Rosella Hermens, et al.. (2008). The methodological quality of clinical guidelines of the European Society of Human Reproduction and Embryology (ESHRE). Human Reproduction. 23(8). 1786–1792. 6 indexed citations

Nargund, Geeta, Bart C.J.M. Fauser, Nicholas S. Macklon, et al.. (2007). The ISMAAR proposal on terminology for ovarian stimulation for IVF. Human Reproduction. 22(11). 2801–2804. 116 indexed citations

Finnström, Orvar & K. G. Nygren. (2005). [In vitro fertilization in a new era. Technical development and single-embryo transfer for safer treatment].. PubMed. 102(46). 3433–4. 1 indexed citations

Nygren, K. G.. (2002). Assisted reproductive technology in Europe, 1998. Results generated from European registers by ESHRE. Human Reproduction. 17(10). 2781–a. 52 indexed citations

10.

Källén, Bëngt, P Otterblad Olausson, & K. G. Nygren. (2002). Neonatal Outcome in Pregnancies From Ovarian Stimulation. Obstetrics and Gynecology. 100(3). 414–419. 24 indexed citations

11.

Rådestad, Angelique Flöter, et al.. (1996). The utilization rate and pregnancy outcome of multifetal pregnancy reduction in the nordic countries. Acta Obstetricia Et Gynecologica Scandinavica. 75(7). 651–653. 3 indexed citations

12.

Einhorn, N., et al.. (1996). Successful pregnancies after in vitro fertilization in a female previously treated for ovarian carcinoma. International Journal of Gynecological Cancer. 6(3). 246–247. 1 indexed citations

13.

Nilsson, Staffan, Tore Mellbin, Y Hofvander, et al.. (1986). Long-term follow-up of children breast-fed by mothers using oral contraceptives. Contraception. 34(5). 443–457. 25 indexed citations

14.

Nygren, K. G., et al.. (1984). Nova-T und Kupfer T im Fünfjahresvergleich. Geburtshilfe und Frauenheilkunde. 44(3). 180–184. 1 indexed citations

15.

Nygren, K. G. & G Rybo. (1983). Prostaglandins and Menorrhagia. Acta Obstetricia Et Gynecologica Scandinavica. 62(s113). 101–103. 16 indexed citations

16.

Pýörälä, T, Hannu Allonen, K. G. Nygren, Niels Chr. Nielsen, & Tapani Luukkainen. (1982). Return of fertility after the removal of Nova T or Copper T 200. Contraception. 26(2). 113–120. 26 indexed citations

17.

Meirik, Olav, et al.. (1979). DEMOGRAPHIC TECHNIQUES IN DESCRIBING CONTRACEPTIVE USE APPLIED ON THE SITUATION IN SWEDEN. Acta Obstetricia Et Gynecologica Scandinavica. 58(S88). 61–64. 3 indexed citations

18.

Meirik, Olav, et al.. (1978). [Birth rate and birth control in Sweden 1962-1976].. PubMed. 75(6). 426–7, 433. 1 indexed citations

19.

Nilsson, Ove & K. G. Nygren. (1972). Scanning Electron Microscopy of Human Endometrium. Upsala Journal of Medical Sciences. 77(1). 3–7. 20 indexed citations

20.

Nygren, K. G. & Elof D.B. Johansson. (1971). INTERFERENCE WITH THE NORMAL FUNCTION OF THE CORPUS LUTEUM BY ORAL ADMINISTRATION OF SYNTHETIC GESTAGENS. European Journal of Endocrinology. 68(1_Supplb). S170–S170. 5 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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