Gregory Petro

1.1k total citations
34 papers, 745 citations indexed

About

Gregory Petro is a scholar working on Public Health, Environmental and Occupational Health, Infectious Diseases and Obstetrics and Gynecology. According to data from OpenAlex, Gregory Petro has authored 34 papers receiving a total of 745 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Public Health, Environmental and Occupational Health, 14 papers in Infectious Diseases and 12 papers in Obstetrics and Gynecology. Recurrent topics in Gregory Petro's work include Reproductive Health and Contraception (13 papers), HIV/AIDS Research and Interventions (12 papers) and HIV-related health complications and treatments (9 papers). Gregory Petro is often cited by papers focused on Reproductive Health and Contraception (13 papers), HIV/AIDS Research and Interventions (12 papers) and HIV-related health complications and treatments (9 papers). Gregory Petro collaborates with scholars based in South Africa, United States and United Kingdom. Gregory Petro's co-authors include Landon Myer, Tamsin K. Phillips, Allison Zerbe, Elaine J. Abrams, James McIntyre, Kirsty Brittain, Sue Fawcus, Stanzi M. le Roux, Linda‐Gail Bekker and Thokozile R. Malaba and has published in prestigious journals such as The Lancet, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Gregory Petro

32 papers receiving 738 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Gregory Petro South Africa	14	402	327	229	213	187	34	745
Stanzi M. le Roux South Africa	15	400 1.0×	170 0.5×	113 0.5×	164 0.8×	221 1.2×	31	688
Lynda Stranix‐Chibanda Zimbabwe	16	537 1.3×	308 0.9×	221 1.0×	172 0.8×	308 1.6×	57	831
Mark Kabue United States	17	342 0.9×	282 0.9×	143 0.6×	342 1.6×	144 0.8×	34	738
Innocent Mofolo United States	17	533 1.3×	382 1.2×	192 0.8×	280 1.3×	303 1.6×	41	893
Bonus Makanani Malawi	14	336 0.8×	284 0.9×	101 0.4×	143 0.7×	153 0.8×	38	592
Adino Tesfahun Tsegaye Ethiopia	15	228 0.6×	145 0.4×	118 0.5×	230 1.1×	203 1.1×	42	669
Stefanie Theuring Germany	14	416 1.0×	326 1.0×	104 0.5×	248 1.2×	147 0.8×	37	661
Tracy Creek United States	12	541 1.3×	210 0.6×	96 0.4×	208 1.0×	247 1.3×	14	733
Agnes Mahomva Zimbabwe	15	602 1.5×	454 1.4×	74 0.3×	248 1.2×	250 1.3×	31	841
George Kafulafula Malawi	20	792 2.0×	364 1.1×	162 0.7×	326 1.5×	493 2.6×	32	1.3k

Countries citing papers authored by Gregory Petro

Since Specialization

Citations

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

Fields of papers citing papers by Gregory Petro

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Gregory Petro

This figure shows the co-authorship network connecting the top 25 collaborators of Gregory Petro. A scholar is included among the top collaborators of Gregory Petro 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 Gregory Petro. Gregory Petro 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

Kalk, Emma, Mary‐Ann Davies, Dorothy C. Nyemba, et al.. (2025). Comorbidities in pregnant South African women living with HIV and associations with adverse birth outcomes: a prospective cohort study. BMC Pregnancy and Childbirth. 25(1). 924–924.

Kalk, Emma, Alexa Heekes, Amy L. Slogrove, et al.. (2022). Cohort profile: the Western Cape Pregnancy Exposure Registry (WCPER). BMJ Open. 12(6). e060205–e060205. 7 indexed citations

Endler, Margit, Gregory Petro, Kristina Gemzell‐Danielsson, et al.. (2022). A telemedicine model for abortion in South Africa: a randomised, controlled, non-inferiority trial. The Lancet. 400(10353). 670–679. 20 indexed citations

Madlala, Hlengiwe P., Nelia P. Steyn, Emma Kalk, et al.. (2021). Association between food intake and obesity in pregnant women living with and without HIV in Cape Town, South Africa: a prospective cohort study. BMC Public Health. 21(1). 1504–1504. 6 indexed citations

Constant, Deborah, Margit Endler, Daniel Grossman, Gregory Petro, & Malika Patel. (2021). Immediate versus delayed insertion of the copper intrauterine device after medical abortion at 17–20 gestational weeks: a randomised controlled trial. BMJ Sexual & Reproductive Health. 48(1). 28–34. 5 indexed citations

Todd, Catherine S., Heidi E. Jones, Donald R. Hoover, et al.. (2020). Safety and continued use of the levonorgestrel intrauterine system as compared with the copper intrauterine device among women living with HIV in South Africa: A randomized controlled trial. PLoS Medicine. 17(5). e1003110–e1003110. 12 indexed citations

Petro, Gregory, et al.. (2020). Difficult etonogestrel implant removals in South Africa: A review of 74 referred cases. Contraception. 102(2). 129–132. 11 indexed citations

Petro, Gregory, et al.. (2019). Migration of etonogestrel contraceptive implants: Implications for difficult removals services need in southern Africa. South African Medical Journal. 109(8). 559–559. 3 indexed citations

Todd, Catherine S., et al.. (2018). A systematic review of contraceptive continuation among women living with HIV. Contraception. 98(1). 8–24. 7 indexed citations

10.

Brittain, Kirsty, Tamsin K. Phillips, Stanzi M. le Roux, et al.. (2018). Prevalence and determinants of unplanned pregnancy in HIV-positive and HIV-negative pregnant women in Cape Town, South Africa: a cross-sectional study. BMJ Open. 8(4). e019979–e019979. 46 indexed citations

11.

Petro, Gregory. (2017). Non-palpable and difficult contraceptive implant removals: The New Somerset Hospital referral-clinic experience. SHILAP Revista de lepidopterología. 23(3). 101–101. 9 indexed citations

12.

Petro, Gregory, et al.. (2017). Mid-upper arm circumference: A surrogate for body mass index in pregnant women. South African Medical Journal. 107(7). 606–606. 71 indexed citations

13.

Myer, Landon, Allison Zerbe, Tamsin K. Phillips, et al.. (2016). Depression, alcohol use, and stigma in younger versus older HIV-infected pregnant women initiating antiretroviral therapy in Cape Town, South Africa. Archives of Women s Mental Health. 20(1). 149–159. 30 indexed citations

14.

Myer, Landon, L. H. DUNNING, Maia Lesosky, et al.. (2016). Frequency of Viremic Episodes in HIV-Infected Women Initiating Antiretroviral Therapy During Pregnancy: A Cohort Study. Clinical Infectious Diseases. 64(4). 422–427. 58 indexed citations

15.

Phillips, Tamsin K., Annibale Cois, Robert H. Remien, et al.. (2016). Self-Reported Side Effects and Adherence to Antiretroviral Therapy in HIV-Infected Pregnant Women under Option B+: A Prospective Study. PLoS ONE. 11(10). e0163079–e0163079. 16 indexed citations

16.

Jao, Jennifer, Elaine J. Abrams, Tamsin K. Phillips, et al.. (2016). In Utero Tenofovir Exposure Is not Associated With Fetal Long Bone Growth. Clinical Infectious Diseases. 62(12). 1604–1609. 26 indexed citations

17.

Constant, Deborah, Jane Harries, Thokozile R. Malaba, et al.. (2016). Clinical Outcomes and Women’s Experiences before and after the Introduction of Mifepristone into Second-Trimester Medical Abortion Services in South Africa. PLoS ONE. 11(9). e0161843–e0161843. 19 indexed citations

18.

Myer, Landon, Tamsin K. Phillips, Marvin Hsiao, et al.. (2015). Plasma viraemia in HIV‐positive pregnant women entering antenatal care in South Africa. Journal of the International AIDS Society. 18(1). 20045–20045. 28 indexed citations

19.

Beauclair, Roxanne, Gregory Petro, & Landon Myer. (2014). The association between timing of initiation of antenatal care and stillbirths: a retrospective cohort study of pregnant women in Cape Town, South Africa. BMC Pregnancy and Childbirth. 14(1). 204–204. 32 indexed citations

20.

Langenegger, Eduard, et al.. (2012). Invasive versus non-invasive monitoring of acute severe hypertension in women with pre-eclampsia. Pregnancy Hypertension. 2(4). 374–379. 4 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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