RT Journal
T1 QUestions and answers
JF JAMA
JO JAMA
YR 1989
FD November 17
VO 262
IS 19
SP 2748
OP 2748
DO 10.1001/jama.1989.03430190132047
UL http://dx.doi.org/10.1001/jama.1989.03430190132047
AB