Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
Beneficial effects of metoprolol in idiopathic dilated cardiomyopathy
1993902 citationsFinn Waagstein, Åke Hjalmarson et al.The Lancetprofile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
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This map shows the geographic impact of M.R. Johnson'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 M.R. Johnson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites M.R. Johnson more than expected).
This network shows the impact of papers produced by M.R. Johnson. 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 M.R. Johnson. The network helps show where M.R. Johnson may publish in the future.
Co-authorship network of co-authors of M.R. Johnson
This figure shows the co-authorship network connecting the top 25 collaborators of M.R. Johnson.
A scholar is included among the top collaborators of M.R. Johnson 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 M.R. Johnson. M.R. Johnson is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Johnson, M.R., Keith D. Aaronson, Charles E. Canter, et al.. (2007). Heart Retransplantation. American Journal of Transplantation. 7(9). 2075–2081.51 indexed citations
9.
Johnson, M.R., David C. Naftel, Robert E. Hobbs, et al.. (1997). The incremental risk of female sex in heart transplantation: a multiinstitutional study of peripartum cardiomyopathy and pregnancy. Cardiac Transplant Research Database Group.. PubMed. 16(8). 801–12.26 indexed citations
10.
Grady, Kathleen L., et al.. (1994). Circadian rhythm changes in blood pressure and heart rate during the first year after heart transplantation.. PubMed. 13(4). 614–23.8 indexed citations
11.
Johnson, M.R.. (1994). Heart failure in women: a special approach?. PubMed. 13(4). S130–4.17 indexed citations
Waagstein, Finn, Åke Hjalmarson, Karl Swedberg, et al.. (1993). Beneficial effects of metoprolol in idiopathic dilated cardiomyopathy. The Lancet. 342(8885). 1441–1446.902 indexed citations breakdown →
14.
Johnson, M.R., G. M. Mullen, E. Jeanne O'Sullivan, et al.. (1993). Risk/benefit ratio of perioperative OKT3 in cardiac transplantation.. PubMed. 25(1 Pt 2). 1149–51.2 indexed citations
15.
Swinnen, L. J., M R Costanzo-Nordin, Susan G. Fisher, et al.. (1992). Increased risk of lymphoproliferative disorders following the use ofOKT3 in cardiac transplantation. 6(3). 253–259.4 indexed citations
16.
Costanzo-Nordin, M R, Kathleen L. Grady, M.R. Johnson, et al.. (1990). Long-term effects of cyclosporine-based immunosuppression in cardiac transplantation: the Loyola experience.. PubMed. 22(3 Suppl 1). 6–11.8 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.