This map shows the geographic impact of Yomei Hiraga'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 Yomei Hiraga with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Yomei Hiraga more than expected).
This network shows the impact of papers produced by Yomei Hiraga. 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 Yomei Hiraga. The network helps show where Yomei Hiraga may publish in the future.
Co-authorship network of co-authors of Yomei Hiraga
This figure shows the co-authorship network connecting the top 25 collaborators of Yomei Hiraga.
A scholar is included among the top collaborators of Yomei Hiraga 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 Yomei Hiraga. Yomei Hiraga is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Ohmichi, Mitsuhide, et al.. (2000). [Sarcoidosis associated with lupus pernio and acute pulmonary cavitation].. PubMed. 38(4). 307–11.
7.
Pietinalho, Anne, et al.. (2000). The prognosis of pulmonary sarcoidosis in Finland and Hokkaido, Japan. A comparative five-year study of biopsy-proven cases.. PubMed. 17(2). 158–66.51 indexed citations
Iyonaga, Kazuhiro, Moritaka Suga, Hidenori Ichiyasu, et al.. (1998). Measurement of serum monocyte chemoattractant protein-1 and its clinical application for estimating the activity of granuloma formation in sarcoidosis.. PubMed. 15(2). 165–72.26 indexed citations
10.
Hosoda, Yutaka, Momoko Yamaguchi, & Yomei Hiraga. (1997). GLOBAL EPIDEMIOLOGY OF SARCOIDOSIS. Clinics in Chest Medicine. 18(4). 681–694.63 indexed citations
11.
Ishihara, Mami, Hidetoshi Inoko, K. Suzuki, et al.. (1996). HLA class II genotyping of sarcoidosis patients in Hokkaido by PCR-RFLP.. PubMed. 40(4). 540–3.7 indexed citations
12.
Pietinalho, Anne, Yomei Hiraga, Yutaka Hosoda, et al.. (1995). The frequency of sarcoidosis in Finland and Hokkaido, Japan. A comparative epidemiological study.. PubMed. 12(1). 61–7.109 indexed citations
13.
Ohmichi, Mitsuhide, et al.. (1994). [Clinical usefulness of Ga-67 scintigraphy and Ga-67 single photon emission computed tomography in sarcoidosis].. PubMed. 52(6). 1516–20.1 indexed citations
Hiraga, Yomei, et al.. (1981). [Clinical epidemiological study on the use of ultrasonic humidifier in low-humidity rooms of apartment buildings heated by a central heating system (author's transl)].. PubMed. 19(9). 631–40.5 indexed citations
18.
Hiraga, Yomei, et al.. (1977). A local outbreak of sarcoidosis in Northern Japan.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 149(1). 38–43.4 indexed citations
19.
Mikami, Riichiro, et al.. (1977). Parenteral treatment of sarcoidosis with triamcinolone.. PubMed. 149(3). 415–22.1 indexed citations
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.