This map shows the geographic impact of Parfrey Ps'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 Parfrey Ps with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Parfrey Ps more than expected).
This network shows the impact of papers produced by Parfrey Ps. 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 Parfrey Ps. The network helps show where Parfrey Ps may publish in the future.
Co-authorship network of co-authors of Parfrey Ps
This figure shows the co-authorship network connecting the top 25 collaborators of Parfrey Ps.
A scholar is included among the top collaborators of Parfrey Ps 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 Parfrey Ps. Parfrey Ps is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Jj, Brown, et al.. (2009). Merten GJ, Burgess WP, Gray LV, et al. Prevention of contrast-induced nephropathy with sodium bicarbonate: A randomized controlled trial. JAMA 2004; 291: 2328-2334. Tepel M, van der Giet M, Schwarzfeld C, Laufer U, Liermann D, Zidek W. Prevention of Radiographic-Contrast-Agent-Induced Reductions in Renal Function by Acetylcysteine. N Engl J Med 2000;343(3):180-184..121 indexed citations
Ps, Parfrey, et al.. (2000). The impact of anemia correction on cardiovascular disease in end-stage renal disease.. PubMed. 20(4). 350–5.20 indexed citations
Ps, Parfrey, et al.. (1996). Concurrent utilization review and inappropriate hospital stay: evaluation of a program.. PubMed. 19(1). 28–35.1 indexed citations
13.
Ps, Parfrey, et al.. (1994). Cardiac disease in uremia.. PubMed. 14(3). 245–52.12 indexed citations
14.
Ps, Parfrey, et al.. (1994). The feasibility and efficacy of early discharge planning initiated by the admitting department in two acute care hospitals.. PubMed. 17(2). 88–96.22 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.