RT Journal
T1 QUestions and answers
JF JAMA
JO JAMA
YR 1989
FD January 27
VO 261
IS 4
SP 621
OP 622
DO 10.1001/jama.1989.03420040163039
UL http://dx.doi.org/10.1001/jama.1989.03420040163039
AB