RT Journal
T1 INdex to advertisers
JF JAMA
JO JAMA
YR 1989
FD August 4
VO 262
IS 5
SP 722
OP 722
DO 10.1001/jama.1989.03430050140053
UL http://dx.doi.org/10.1001/jama.1989.03430050140053
AB