RT Journal
T1 MEdical progress
JF JAMA
JO JAMA
YR 1989
FD September 15
VO 262
IS 11
SP 1538
OP 1538
DO 10.1001/jama.1989.03430110136052
UL http://dx.doi.org/10.1001/jama.1989.03430110136052
AB