H.K. Ma
Impact in
- Obstetrics and Gynecology top 5%
- Endometrial and Cervical Cancer Treatments
- Maternal and Perinatal Health Interventions
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- Maternal and fetal healthcare
- Prenatal Screening and Diagnostics
Papers in
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- Ectopic Pregnancy Diagnosis and Management 6
- Gestational Trophoblastic Disease Studies 6
- Reproductive Health and Contraception 3
- Pregnancy-related medical research 2
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- Prenatal Screening and Diagnostics 4
- Co-authors
- L.C. Wong (12 shared papers)Yew Cheong Choo (4 shared papers)Patricia A. King (4 shared papers)S. J. Duthie (4 shared papers)Hys Ngan (5 shared papers)Pak Chung Ho (3 shared papers)W.S.B. Yeung (1 shared paper)J. S. K. Woo (1 shared paper)
- Journals
- Gynecologic Oncology (8 papers)Contraception (3 papers)Journal of Reproductive Immunology (2 papers)International Journal of Gynecology & Obstetrics (2 papers)American Journal of Obstetrics and Gynecology (2 papers)
- Partner nations
- Hong KongChinaUnited States
In The Last Decade
H.K. Ma
27 papers receiving 431 citations
Peers
Comparison fields: 5 of 59
- Obstetrics and Gynecology 153
- Pediatrics, Perinatology and Child Health 116
- Public Health, Environmental and Occupational Health 136
- Geriatrics and Gerontology 13
- Reproductive Medicine 29
Countries citing papers authored by H.K. Ma
This map shows the geographic impact of H.K. Ma'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 H.K. Ma with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H.K. Ma more than expected).
Fields of papers citing papers by H.K. Ma
This network shows the impact of papers produced by H.K. Ma. 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 H.K. Ma. The network helps show where H.K. Ma may publish in the future.
Co-authors
The 25 scholars most cited alongside H.K. Ma, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 28 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | 1989 | 64 | |
| 2 | 1986 | 43 | |
| 3 | 1985 | 39 | |
| 4 | 1991 | 37 | |
| 5 | 1984 | 36 | |
| 6 | 1994 | 33 | |
| 7 | 1993 | 26 | |
| 8 | 1993 | 24 | |
| 9 | 2014 | 24 | |
| 10 | 2021 | 17 | |
| 11 | 1984 | 14 | |
| 12 | 1979 | 11 | |
| 13 | 1990 | 10 | |
| 14 | 1993 | 10 | |
| 15 | 1986 | 10 | |
| 16 | Predictive value of ankle-brachial index and blood glucose on the outcomes of six-year all-cause mortality and cardiovascular mortality in a Chinese population of type 2 diabetes patients. | 2012 | 8 |
| 17 | 1989 | 7 | |
| 18 | 1980 | 7 | |
| 19 | 2021 | 6 | |
| 20 | 1983 | 6 |
About H.K. Ma
H.K. Ma is a scholar working on Public Health, Environmental and Occupational Health, Pediatrics, Perinatology and Child Health, Surgery, Obstetrics and Gynecology and Oncology, having authored 28 papers that have together received 450 indexed citations. Recurring topics across this work include Ectopic Pregnancy Diagnosis and Management (6 papers), Gestational Trophoblastic Disease Studies (6 papers), Prenatal Screening and Diagnostics (4 papers), Reproductive Health and Contraception (3 papers), Pregnancy-related medical research (2 papers), Ovarian cancer diagnosis and treatment (2 papers), Pregnancy and preeclampsia studies (2 papers) and Cervical Cancer and HPV Research (2 papers). The work is most often cited by research in Obstetrics and Gynecology (153 citations), Pediatrics, Perinatology and Child Health (116 citations), Public Health, Environmental and Occupational Health (136 citations), Geriatrics and Gerontology (13 citations) and Reproductive Medicine (29 citations). H.K. Ma has collaborated with scholars based in Hong Kong, China and United States. Frequent co-authors include L.C. Wong, Yew Cheong Choo, Patricia A. King, S. J. Duthie, Hys Ngan, Pak Chung Ho, W.S.B. Yeung, J. S. K. Woo, Anupam Ghosh and D. Choy. Their work appears in journals such as Gynecologic Oncology, Contraception, Journal of Reproductive Immunology, International Journal of Gynecology & Obstetrics and American Journal of Obstetrics and Gynecology.
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.