This map shows the geographic impact of K Sonda'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 K Sonda with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites K Sonda more than expected).
This network shows the impact of papers produced by K Sonda. 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 K Sonda. The network helps show where K Sonda may publish in the future.
Co-authorship network of co-authors of K Sonda
This figure shows the co-authorship network connecting the top 25 collaborators of K Sonda.
A scholar is included among the top collaborators of K Sonda 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 K Sonda. K Sonda is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Tokumoto, Tadahiko, Kazunari Tanabe, K Sonda, et al.. (1996). Effect of interferon (IFN-alpha) for prevention of hepatitis C transmission from a seropositive donor to a seronegative recipient in renal transplantation.. PubMed. 28(3). 1503–4.3 indexed citations
7.
Tanabe, Kazunari, Kazuhiro Takahashi, Ichiro Koyama, et al.. (1996). Early diagnosis of CMV syndrome after kidney transplantation: comparison between CMV antigenemia and PCR assay.. PubMed. 28(3). 1508–10.7 indexed citations
8.
Kimata, Naoki, Katsuyuki Tanabe, Nobuo Ishikawa, et al.. (1996). Correlation between proteinuria and prognosis of transplant IgA nephropathy.. PubMed. 28(3). 1537–9.14 indexed citations
9.
Tanabe, K., Kazuhiro Takahashi, K Sonda, et al.. (1996). Long-term results of OKT3-treated renal transplant recipients.. PubMed. 28(3). 1350–1.1 indexed citations
10.
Sonda, K, Kazuhiro Takahashi, Kumiko Tanabe, et al.. (1996). Clinical pharmacokinetic study of mizoribine in renal transplantation patients.. PubMed. 28(6). 3643–8.73 indexed citations
11.
Tanabe, K., Kazuhiro Takahashi, K Sonda, et al.. (1996). Clinicopathological analysis of rejection episodes in ABO-incompatible kidney transplantation.. PubMed. 28(3). 1447–8.10 indexed citations
Tanabe, K., Shoji Koga, Kazuhiro Takahashi, et al.. (1996). Diabetes mellitus after renal transplantation under FK 506 (tacrolimus) as primary immunosuppression.. PubMed. 28(3). 1304–5.9 indexed citations
14.
Tanabe, K., Kazuo Takahashi, K Sonda, et al.. (1995). ABO-incompatible living kidney donor transplantation: results and immunological aspects.. PubMed. 27(1). 1020–3.22 indexed citations
15.
K, Ota, Satoshi Teraoka, K. Takahashi, & K Sonda. (1994). Situation of organ transplantation in Asian countries (1989-1990).. PubMed. 26(4). 2457–60.4 indexed citations
16.
Takahashi, Kazuhiro, et al.. (1993). The first report of a successful delivery in a woman with an ABO-incompatible kidney transplantation.. PubMed. 56(5). 1288–9.3 indexed citations
17.
Takahashi, Kazuhiro, Takashi Yagisawa, K Sonda, et al.. (1993). ABO-incompatible kidney transplantation in a single-center trial.. PubMed. 25(1 Pt 1). 271–3.24 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.