Nico Bollen

1.1k total citations
17 papers, 836 citations indexed

About

Nico Bollen is a scholar working on Public Health, Environmental and Occupational Health, Reproductive Medicine and Pediatrics, Perinatology and Child Health. According to data from OpenAlex, Nico Bollen has authored 17 papers receiving a total of 836 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Public Health, Environmental and Occupational Health, 11 papers in Reproductive Medicine and 4 papers in Pediatrics, Perinatology and Child Health. Recurrent topics in Nico Bollen's work include Reproductive Biology and Fertility (10 papers), Ovarian function and disorders (7 papers) and Reproductive Health and Technologies (4 papers). Nico Bollen is often cited by papers focused on Reproductive Biology and Fertility (10 papers), Ovarian function and disorders (7 papers) and Reproductive Health and Technologies (4 papers). Nico Bollen collaborates with scholars based in Belgium. Nico Bollen's co-authors include Paul Devroey, Michel Camus, C. Staessen, André C. Van Steirteghem, Herman Tournaye, M. Camus, A. Wisanto, Pierre Vanderzwalmen, K. Takahashi and R Schoysman and has published in prestigious journals such as Human Reproduction, Fertility and Sterility and British Journal of Urology.

In The Last Decade

Nico Bollen

17 papers receiving 778 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Nico Bollen Belgium	13	639	601	395	91	56	17	836
Jan Gerris Belgium	11	691 1.1×	659 1.1×	626 1.6×	111 1.2×	31 0.6×	30	1.0k
A. Ellenbogen Israel	15	564 0.9×	609 1.0×	309 0.8×	59 0.6×	28 0.5×	49	821
S.J. Muasher United States	18	846 1.3×	922 1.5×	435 1.1×	84 0.9×	44 0.8×	40	1.2k
Theodore A. Baramki United States	13	384 0.6×	414 0.7×	143 0.4×	62 0.7×	26 0.5×	22	588
Caroline Ross United Kingdom	10	297 0.5×	325 0.5×	244 0.6×	51 0.6×	37 0.7×	17	474
Marcos Sampaio Brazil	18	525 0.8×	685 1.1×	371 0.9×	58 0.6×	42 0.8×	51	857
Kubilay Vicdan Türkiye	17	441 0.7×	470 0.8×	219 0.6×	96 1.1×	42 0.8×	41	694
Kamal Ojha United Kingdom	17	435 0.7×	383 0.6×	217 0.5×	90 1.0×	30 0.5×	36	747
S.A. Carson United States	9	486 0.8×	232 0.4×	159 0.4×	135 1.5×	19 0.3×	23	622
R Frydman France	11	348 0.5×	310 0.5×	158 0.4×	57 0.6×	34 0.6×	28	584

Countries citing papers authored by Nico Bollen

Since Specialization

Citations

This map shows the geographic impact of Nico Bollen'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 Nico Bollen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Nico Bollen more than expected).

Fields of papers citing papers by Nico Bollen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Nico Bollen. 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 Nico Bollen. The network helps show where Nico Bollen may publish in the future.

Co-authorship network of co-authors of Nico Bollen

This figure shows the co-authorship network connecting the top 25 collaborators of Nico Bollen. A scholar is included among the top collaborators of Nico Bollen 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 Nico Bollen. Nico Bollen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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17 of 17 papers shown

Vanderzwalmen, Pierre, G. Bertin, C. Debauche, et al.. (2002). Births after vitrification at morula and blastocyst stages: effect of artificial reduction of the blastocoelic cavity before vitrification. Human Reproduction. 17(3). 744–751. 207 indexed citations

Schoysman, R, E. Van Roosendaal, Nico Bollen, et al.. (2001). Modern sperm retrieval techniques and their usefulness in oocyte fertilization. British Journal of Urology. 88(2). 141–146. 4 indexed citations

Bollen, Nico, Michel Camus, Herman Tournaye, et al.. (1993). Embryo reduction in triplet pregnancies after assisted procreation: a comparative study. Fertility and Sterility. 60(3). 504–509. 29 indexed citations

Camus, Michel, et al.. (1993). Pregnancy: Analysis of the risk factors with regard to the occurrence of ectopic pregnancy after medically assisted procreation. Human Reproduction. 8(8). 1284–1287. 44 indexed citations

Tournaye, Herman, Paul Devroey, Michel Camus, et al.. (1992). Zygote intrafallopian transfer or in vitro fertilization and embryo transfer for the treatment of male-factor infertility: a prospective randomized trial. Fertility and Sterility. 58(2). 344–350. 23 indexed citations

Tournaye, Herman, Paul Devroey, Michel Camus, et al.. (1992). Comparison of in-vitro fertilization in male and tubal infertility: a 3 year survey*. Human Reproduction. 7(2). 218–222. 40 indexed citations

Smitz, Johan, E. Van den Abbeel, Nico Bollen, et al.. (1992). The effect of gonadotrophin-releasing hormone (GnRH) agonist in the follicular phase on in-vitro fertilization outcome in normo-ovulatory women. Human Reproduction. 7(8). 1098–1102. 28 indexed citations

Bollen, Nico, et al.. (1992). Laparoscopic removal of benign mature teratoma. Human Reproduction. 7(10). 1429–1432. 40 indexed citations

Staessen, C., Michel Camus, Nico Bollen, Paul Devroey, & André C. Van Steirteghem. (1992). The relationship between embryo quality and the occurrence of multiple pregnancies. Fertility and Sterility. 57(3). 626–630. 125 indexed citations

10.

Tournaye, Herman, et al.. (1992). In vitro fertilization techniques with frozen-thawed sperm: A method for preserving the progenitive potential of Hodgkin patients. International Journal of Gynecology & Obstetrics. 37(1). 66–66. 40 indexed citations

11.

Staessen, C., et al.. (1992). The relationship between embryo quality and the occurrence of multiple pregnancies. International Journal of Gynecology & Obstetrics. 39(3). 255–255. 147 indexed citations

12.

Bollen, Nico, Michel Camus, C. Staessen, et al.. (1991). The incidence of multiple pregnancy after in vitro fertilization and embryo transfer, gamete, or zygote intrafallopian transfer. Fertility and Sterility. 55(2). 314–318. 30 indexed citations

13.

Tournaye, Herman, Michel Camus, Nico Bollen, et al.. (1991). In vitro fertilization techniques with frozen-thawed sperm: a method for preserving the progenitive potential of Hodgkin patients. Fertility and Sterility. 55(2). 443–445. 43 indexed citations

14.

Smitz, Johan, M. Camus, Paul Devroey, et al.. (1991). CLINICAL REPORT. Human Reproduction. 6(2). 290–293. 25 indexed citations

15.

Smitz, Johan, Nico Bollen, M. Camus, et al.. (1990). Short-term use of buserelin in combination with human menopausal gonadotrophins for ovarian stimulation for in-vitro fertilization in endocrinologically normal women. Human Reproduction. 5(2). 157–162. 6 indexed citations

16.

Devroey, Paul, Michel Camus, C. Staessen, et al.. (1990). ZIFT: Indications and Limitations.. VUBIR (Vrije Universiteit Brussel). 2 indexed citations

17.

Wisanto, A., et al.. (1989). Effect of transuterine puncture during transvaginal oocyte retrieval on the results of human in-vitro fertilization. Human Reproduction. 4(7). 790–793. 3 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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