lippincott williams & wilkins (126)
elsevier b.v. (92)
elsevier bv (82)
cma impact inc. (72)
elsevier inc. (72)
springer-verlag (64)
ovid technologies (wolters kluwer health) (62)
springer nature (50)
zenodo (40)
oxford university press / usa (31)
springer (30)
w b saunders co-elsevier inc (22)
wiley-blackwell (21)
elsevier science inc (17)
elsevier ltd (16)
biomed central (15)
hindawi limited (15)
taylor & francis ltd (15)
bmj publishing group (14)
wiley (13)
springer international publishing (9)
bmc (8)
elsevier (8)
american medical association (5)
gale, cengage learning (5)
gale (4)
american speech-language-hearing association (3)
canadian society for education through art (csea) (3)
cell press (3)
media source, inc. (3)
raptor research foundation (3)
st. joseph communications (3)
american counseling association (2)
centaur communications (2)
de gruyter (2)
follmer group (2)
oxford university press on behalf of bjs foundation ltd (2)
society of certified insurance counselors, dba national alliance for insurance education & research (2)
springer, berlin-new york (2)
united western communications ltd. (2)
univ. natal, durban (2)
cambridge university press, cambridge (1)
columbia university. (1)
m. shanken communications, inc. (1)
naxos digital services us inc. (1)
oldenbourg wissenschaftsverlag gmbh (1)
oxford univ. press, new york (1)
springer, berlin (1)
springer-verlag, berlin-new york (1)
the japan society of coloproctology (1)