Unveiling transplantation research productivity of United States: A bibliometric analysis

Table 1 Top-contributing institutions in United States transplantation research according to the number of citations

Organization	Citations	Total link strength
University of Pittsburgh	68810	23409
Harvard Medical School	54838	13446
University of Michigan	49111	17482
University of California Los Angeles	45440	16112
University of Minnesota	43839	16069
Mayo Clinic	42903	14975
University Calif San Francisco	41100	15648
University of Pennsylvania	31353	14566
Washington University	31142	12641
Stanford University	30728	12815
Johns Hopkins University	30682	14709
Columbia University	25437	11562
University Washington	24740	8223
Northwestern University	24273	12338
Massachusetts Gen Hosp	22332	9733
Emory University	21746	10037
Duke University	21557	10097
Cleveland Clinic	20612	10384
University of Miami	19751	5763
University of Alabama Birmingham	19735	10386

Table 2 Top 20 most cited authors in the transplantation research from the United States

Author	Research field	Citations	Documents
Segev Dorry L	Transplant epidemiology	12490	378
Kirklin James K	Heart transplantation	10323	145
Cooper David	Heart transplantation xenotransplantation	10307	228
Merion Robert M	Liver transplantation	9580	104
Edwards Leah B	Heart transplantation	9547	71
Stehlik Josef	Heart transplantation	9315	113
Naftel David C	Heart transplantation	8179	80
Kasiske Bertram I	Kidney transplantation	8144	179
Pagani Francis D	Heart transplantation	8039	52
Sachs David H	Transplant immunology	7942	207
Israni Ajay K	Kidney transplantation	7328	157
Kormos Robert I	Heart transplantation	7111	36
Snyder Jon J	Transplant epidemiology	6738	137
Kuchervavava Anna V	Research analyst/heart and lung	6248	35
Meier-Kriesche H-U	Kidney transplantation	5630	59
Yusen Roger D	Lung transplantation	5442	34
Wiesner Russel	Liver transplant	5338	40
Christie Jason D	Lung transplantation	5259	47
Skeans Melissa A	Kidney transplantation	5247	71
Smith Judi M	Kidney transplantation	4945	54

Table 3 Number of publications and citations in transplant journals for transplantation-related research performed in the United States

Source	Citations	Documents	Total link strength
American Journal of Transplantation	194905	3954	41343
Transplantation	185248	4795	36949
Journal Of Heart and Lung Transplantation	96827	2388	11098
Liver Transplantation	74441	1815	11807
Nephrology Dialysis Transplantation	67526	1863	1779
Clinical Transplantation	32154	2082	15473
Cell Transplantation	25588	891	1668
Pediatric Transplantation	20700	1539	7404
Current Opinion in Organ Transplantation	13792	1029	10805
Transplant Infectious Disease	13246	932	3799
Transplantation Proceedings	12859	1166	4596
Transplant International	11987	624	5674
Xenotransplantation	11935	512	3930
Transplant Immunology	7017	342	2345
Progress In Transplantation	4622	550	2382
Transplantation Reviews	3010	153	2258
Experimental And Clinical Transplantation	1229	275	1272
Transplantation Direct	1183	341	2574
Annals of Transplantation	979	142	764
Transplantation And Cellular Therapy	902	375	166
Current Transplantation Reports	344	126	1366
International Journal of Organ Transplantation Medicine	35	7	35
Transplant Research and Risk Management	9	7	37
Indian Journal of Transplantation	0	9	52
Russian Journal of Transplantology and Artificial Organs	0	1	0

Table 4 Publications and citations of the top-collaborating countries with the United States

Country	Documents	Citations	Total link strength
Canada	1263	55702	28468
Germany	1012	44713	19065
England	807	36042	17916
Italy	719	33311	14855
France	598	32373	14968
Japan	594	21229	8395
China	579	13450	6755
Switzerland	506	25882	12413
Netherlands	479	18867	9232
Spain	478	24101	12506
Australia	473	24439	13353
Belgium	357	23002	9931
Austria	290	12571	7877
Sweden	266	11197	4958
Brazil	238	10420	6457
South Korea	197	6195	3019
India	138	4197	3039
Taiwan	129	4398	1949
Israel	116	2539	1121

Table 5 Most occurring keywords in the research on transplantation from the United States

Keyword	Occurrences	Total link strength
Recipients	3045	13158
Survival	2779	11573
Outcomes	2399	10308
Rejection	1792	7691
Kidney transplantation	1605	7823
Mortality	1501	6280
Risk	1497	6105
Impact	1490	6486
Immunosuppression	1484	7371
Renal-transplantation	1403	6297
Therapy	1347	4974
Risk-factors	1340	5482
Infection	1195	4580
Children	1154	4366
Expression	1083	3647
Kidney-transplantation	1080	4763
Liver transplantation	1020	3976
Lung transplantation	931	3809