Hirokazu Oyamada
- Co-authors
- Motoharu KondoToshikazu YoshikawaYuji NaitoYutaka MoritaTomoyuki YonetaShuji TakahashiShigenobu UedaShigeru Sugino
- Topics
- Abdominal vascular conditions and treatments (4 papers)Helicobacter pylori-related gastroenterology studies (4 papers)Gastroesophageal reflux and treatments (3 papers)
- Partner nations
- Japan
In The Last Decade
Hirokazu Oyamada
34 papers receiving 412 citations
Peers
Comparison fields: 5 of 81
- Surgery 163
- Molecular Biology 96
- Physiology 61
- Nutrition and Dietetics 57
- Epidemiology 55
Countries citing papers authored by Hirokazu Oyamada
This map shows the geographic impact of Hirokazu Oyamada'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 Hirokazu Oyamada with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hirokazu Oyamada more than expected).
Fields of papers citing papers by Hirokazu Oyamada
This network shows the impact of papers produced by Hirokazu Oyamada. 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 Hirokazu Oyamada. The network helps show where Hirokazu Oyamada may publish in the future.
Co-authorship network of co-authors of Hirokazu Oyamada
This figure shows the co-authorship network connecting the top 25 collaborators of Hirokazu Oyamada. A scholar is included among the top collaborators of Hirokazu Oyamada 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 Hirokazu Oyamada. Hirokazu Oyamada is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 0 | |
| 2 | 4 | |
| 3 | 2 | |
| 4 | 3 | |
| 5 | 12 | |
| 6 | 9 | |
| 7 | 9 | |
| 8 | 1 | |
| 9 | 3 | |
| 10 | 0 | |
| 11 | 16 | |
| 12 | 10 | |
| 13 | [A case of inflammatory myofibroblastic tumor of the lesser omentum with intratumoral hemorrhage]. | 1 |
| 14 | 5 | |
| 15 | 8 | |
| 16 | 12 | |
| 17 | 38 | |
| 18 | 56 | |
| 19 | 143 | |
| 20 | 22 |
About Hirokazu Oyamada
Hirokazu Oyamada is a scholar working on Gastroenterology, Nephrology and Internal Medicine, having authored 39 papers that have together received 423 indexed citations. Recurring topics across this work include Abdominal vascular conditions and treatments (4 papers), Helicobacter pylori-related gastroenterology studies (4 papers) and Gastroesophageal reflux and treatments (3 papers). The work is most often cited by research in Pharmacology (45 citations), Gastroenterology (23 citations) and Biochemistry (23 citations). Hirokazu Oyamada has collaborated with scholars based in Japan. Frequent co-authors include Motoharu Kondo, Toshikazu Yoshikawa, Yuji Naito, Yutaka Morita, Tomoyuki Yoneta, Shuji Takahashi, Shigenobu Ueda, Shigeru Sugino, Norimasa Yoshida and Takashi Ando. Their work appears in journals such as Scientific Reports, Current Pharmaceutical Design and Digestive Diseases and Sciences.
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.