RT Journal
T1 QUestions and answers
JF JAMA
JO JAMA
YR 1969
FD August 4
VO 209
IS 5
SP 777
OP 778
DO 10.1001/jama.1969.03160180123031
UL http://dx.doi.org/10.1001/jama.1969.03160180123031
AB