O Koller
Impact in
- Obstetrics and Gynecology top 5%
- Pregnancy and preeclampsia studies
- Gestational Diabetes Research and Management
- Endometrial and Cervical Cancer Treatments
- Hematology top 10%
- Iron Metabolism and Disorders
Papers in
-
- Pregnancy and preeclampsia studies 5
- Endometrial and Cervical Cancer Treatments 4
- Gestational Diabetes Research and Management 3
-
- Iron Metabolism and Disorders 5
- Co-authors
- Norvald Sagen (5 shared papers)Roar Sandvei (1 shared paper)M Ulstein (1 shared paper)Kjell Haram (2 shared papers)Per Bergsjø (5 shared papers)Hyun Chan Kim (2 shared papers)Tore Sanner (2 shared papers)Per Kolstad (2 shared papers)
In The Last Decade
O Koller
23 papers receiving 290 citations
Peers
Comparison fields: 5 of 59
- Obstetrics and Gynecology 203
- Hematology 101
- Genetics 68
- Pediatrics, Perinatology and Child Health 92
- Reproductive Medicine 31
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 24 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | 1982 | 76 | |
| 2 | 1979 | 49 | |
| 3 | 1980 | 45 | |
| 4 | 1982 | 31 | |
| 5 | 1969 | 28 | |
| 6 | 1953 | 27 | |
| 7 | 1977 | 21 | |
| 8 | 1960 | 11 | |
| 9 | 1964 | 7 | |
| 10 | 1967 | 6 | |
| 11 | Low-dose chlormadinone acetate for contraception. Clinical experience. | 1972 | 6 |
| 12 | 1984 | 5 | |
| 13 | 1966 | 5 | |
| 14 | 1966 | 5 | |
| 15 | 1967 | 4 | |
| 16 | 1966 | 4 | |
| 17 | 1985 | 3 | |
| 18 | [Maternal mortality in Norway 1951-80]. | 1983 | 3 |
| 19 | 1955 | 2 | |
| 20 | 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 24 papers that have together received 342 indexed citations. Recurring topics across this work include Iron Metabolism and Disorders (5 papers), Pregnancy and preeclampsia studies (5 papers), Hemoglobinopathies and Related Disorders (4 papers), Endometrial and Cervical Cancer Treatments (4 papers), Gestational Diabetes Research and Management (3 papers), Cervical Cancer and HPV Research (2 papers), Cardiovascular Issues in Pregnancy (2 papers) and Birth, Development, and Health (2 papers). The work is most often cited by research in Obstetrics and Gynecology (203 citations), Hematology (101 citations), Genetics (68 citations), Pediatrics, Perinatology and Child Health (92 citations) and Reproductive Medicine (31 citations). O Koller has collaborated with scholars based in Norway and Denmark. Frequent co-authors include Norvald Sagen, Roar Sandvei, M Ulstein, Kjell Haram, Per Bergsjø, Hyun Chan Kim, Tore Sanner, Per Kolstad, Alexander Pihl and Stein Tore Nilsen. Their work appears in journals such as Acta Obstetricia Et Gynecologica Scandinavica, American Journal of Obstetrics and Gynecology, Obstetrical & Gynecological Survey, BJOG An International Journal of Obstetrics & Gynaecology and International Journal of Gynecology & Obstetrics.
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.