This map shows the geographic impact of Chang Py'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 Chang Py with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Chang Py more than expected).
This network shows the impact of papers produced by Chang Py. 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 Chang Py. The network helps show where Chang Py may publish in the future.
Co-authorship network of co-authors of Chang Py
This figure shows the co-authorship network connecting the top 25 collaborators of Chang Py.
A scholar is included among the top collaborators of Chang Py 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 Chang Py. Chang Py is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Py, Chang, et al.. (1993). [The coexistence of vesicoureteral reflux and ureteropelvic junction obstruction in children].. PubMed. 33(4). 273–9.
6.
Py, Chang, et al.. (1992). Status and trend of HIV-1 infection and AIDS in Taiwan, December, 1991.. PubMed. 10(1). 65–8.3 indexed citations
7.
Py, Chang, et al.. (1992). Conservative treatment of neonatal hydronephrosis.. PubMed. 91(1). 75–80.12 indexed citations
8.
Py, Chang, et al.. (1992). Experience with treatment of gastroschisis and omphalocele.. PubMed. 91(4). 447–51.5 indexed citations
9.
Py, Chang, et al.. (1990). [Congenital megacolon presented as fecaloma and urinary tract infection. Report of one case].. PubMed. 30(6). 437–41.1 indexed citations
10.
Lee, Hsiang‐Chun, et al.. (1990). [Chylous ascites in infancy].. PubMed. 45(2). 130–3.1 indexed citations
11.
Py, Chang, et al.. (1989). [Lead exposure among Kaohsiung traffic policemen].. PubMed. 5(6). 314–9.6 indexed citations
12.
Py, Chang, et al.. (1988). Cell-cycle dependence of X-ray oxygen effect: role of endogenous glutathione.. PubMed. 217–23.9 indexed citations
13.
Py, Chang, et al.. (1988). Insulin autoimmune syndrome in methimazole or carbimazole treated Chinese patients of Graves' disease.. PubMed. 42(3). 163–8.2 indexed citations
14.
Sheu, Jin‐Chuan, et al.. (1986). Abdominal actinomycosis in childhood--a case report.. PubMed. 85(6). 638–42.1 indexed citations
15.
Chen, Michael C., et al.. (1978). Granulomatous disease of the large intestine secondary to schistosome infestation. A study of 229 cases.. PubMed. 4(5). 371–8.10 indexed citations
16.
Py, Chang, et al.. (1974). Geographical distribution of mortality from cerebrovascular disease in Taiwan.. PubMed. 73(5). 277–88.2 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.