RT Journal
T1 QUestions and answers
JF Journal of the American Medical Association
JO Journal of the American Medical Association
YR 1959
FD June 13
VO 170
IS 7
SP 885
OP 892
DO 10.1001/jama.1959.03010070125031
UL http://dx.doi.org/10.1001/jama.1959.03010070125031
AB