Takao Koyama

49 papers and 719 indexed citations i.

About

Takao Koyama is a scholar working on Reproductive Medicine, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Takao Koyama has authored 49 papers receiving a total of 719 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Reproductive Medicine, 7 papers in Surgery and 7 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Takao Koyama’s work include Ovarian function and disorders (6 papers), Cardiac Imaging and Diagnostics (5 papers) and Cardiovascular Function and Risk Factors (4 papers). Takao Koyama is often cited by papers focused on Ovarian function and disorders (6 papers), Cardiac Imaging and Diagnostics (5 papers) and Cardiovascular Function and Risk Factors (4 papers). Takao Koyama collaborates with scholars based in Japan, United States and Italy. Takao Koyama's co-authors include Lilly Chang, Rogerio A. Løbo, Enrico Carmina, Frank Z. Stanczyk, Nobuyoshi Hagino, Akira Itabashi, Yukihiro Takada, Seiichiro Aoe, T Kumasaka and Yasuhiro Toba and has published in prestigious journals such as The Journal of Clinical Endocrinology & Metabolism, Biochemistry and Stroke.

In The Last Decade

Co-authorship network of co-authors of Takao Koyama i

Fields of papers citing papers by Takao Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Takao Koyama

Since Specialization
Citations

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

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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2025