O Koller
Impact in
- Obstetrics and Gynecology top 2%
- Pregnancy and preeclampsia studies
- Gestational Diabetes Research and Management
- Endometrial and Cervical Cancer Treatments
- Hematology top 10%
- Iron Metabolism and Disorders
Papers in
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- Pregnancy and preeclampsia studies 5
- Endometrial and Cervical Cancer Treatments 4
- Gestational Diabetes Research and Management 3
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- Iron Metabolism and Disorders 5
- Co-authors
- Norvald Sagen (5 shared papers)Roar Sandvei (1 shared paper)Kjell Haram (2 shared papers)M Ulstein (1 shared paper)Per Bergsjø (5 shared papers)Hyun Chan Kim (2 shared papers)Tore Sanner (2 shared papers)Stein Tore Nilsen (2 shared papers)
In The Last Decade
O Koller
25 papers receiving 304 citations
Peers
Comparison fields: 5 of 60
- Obstetrics and Gynecology 196
- Hematology 93
- Genetics 51
- Pediatrics, Perinatology and Child Health 80
- Reproductive Medicine 32
Countries citing papers authored by O Koller
This map shows the geographic impact of O Koller'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 O Koller with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites O Koller more than expected).
Fields of papers citing papers by O Koller
This network shows the impact of papers produced by O Koller. 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 O Koller. The network helps show where O Koller may publish in the future.
Co-authors
The 12 scholars most cited alongside O Koller, 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 26 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | 1982 | 88 | |
| 2 | 1979 | 49 | |
| 3 | 1980 | 46 | |
| 4 | 1982 | 35 | |
| 5 | 1969 | 30 | |
| 6 | 1953 | 28 | |
| 7 | 1977 | 23 | |
| 8 | 1960 | 12 | |
| 9 | 1964 | 8 | |
| 10 | 1984 | 7 | |
| 11 | 1967 | 6 | |
| 12 | Low-dose chlormadinone acetate for contraception. Clinical experience. | 1972 | 6 |
| 13 | 1967 | 5 | |
| 14 | 1966 | 5 | |
| 15 | 1966 | 5 | |
| 16 | 1966 | 4 | |
| 17 | 1955 | 3 | |
| 18 | 1985 | 3 | |
| 19 | [Maternal mortality in Norway 1951-80]. | 1983 | 3 |
| 20 | RESULTS OF TREATMENT OF ADENOCARCINOMA OF THE UTERINE BODY. | 1964 | 1 |
About O Koller
O Koller is a scholar working on Obstetrics and Gynecology, Hematology, Genetics, Pediatrics, Perinatology and Child Health and Epidemiology, having authored 26 papers that have together received 372 indexed citations. Recurring topics across this work include Pregnancy and preeclampsia studies (5 papers), Iron Metabolism and Disorders (5 papers), Endometrial and Cervical Cancer Treatments (4 papers), Hemoglobinopathies and Related Disorders (4 papers), Gestational Diabetes Research and Management (3 papers), Ovarian cancer diagnosis and treatment (2 papers), Cervical Cancer and HPV Research (2 papers) and Molecular Biology Techniques and Applications (2 papers). The work is most often cited by research in Obstetrics and Gynecology (196 citations), Hematology (93 citations), Genetics (51 citations), Pediatrics, Perinatology and Child Health (80 citations) and Reproductive Medicine (32 citations). O Koller has collaborated with scholars based in Norway and Denmark. Frequent co-authors include Norvald Sagen, Roar Sandvei, Kjell Haram, M Ulstein, Per Bergsjø, Hyun Chan Kim, Tore Sanner, Stein Tore Nilsen, Per Kolstad and Alexander Pihl. Their work appears in journals such as Acta Obstetricia Et Gynecologica Scandinavica, American Journal of Obstetrics and Gynecology, Obstetrical & Gynecological Survey, International Journal of Gynecology & Obstetrics and BJOG An International Journal of Obstetrics & Gynaecology.
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.