Rank	Institution	Total Cites	Number of Papers	Cites Per Paper
1	Univ Texas	7645	275	27.8
2	Univ Heidelberg	1529	155	9.86
3	Univ Ulm	3023	137	22.07
4	Harvard Univ	2499	134	18.65
5	Johns Hopkins Med Inst	5728	130	44.06
6	Univ Bern	3217	119	27.03
7	Kyushu Univ	1182	109	10.84
8	Johns Hopkins Univ	4617	101	45.71
9	Univ Kiel	1776	87	20.41
10	Kyoto Univ	1344	82	16.39
11	Mem Sloan Kettering Canc Ctr	3730	80	46.63
12	Univ Calif Los Angeles	1637	80	20.46
13	Univ Calif Irvine	2569	76	33.8
14	Wayne State Univ	1101	76	14.49
15	Univ Nebraska	1311	74	17.72
16	Natl Canc Ctr	874	73	11.97
17	Nagoya Univ	768	72	10.67
18	Univ Verona	1566	72	21.75
19	NCI	1326	66	20.09
20	Kanazawa Univ	916	65	14.09

Erratum: after publication, it came to our attention that Johns Hopkins Medical Institute and Johns Hopkins Hospital are considered a part of Johns Hopkins University. This fact changes their citation record in this field to 256 papers with a total of 11,818 citations. Their rankings in this analysis are now as follows: #1 by total cites, #2 by number of papers, and #2 by citations per paper. These changes will be taken into consideration when this Topic comes up for reanalysis.