RT Journal
T1 QUestions and answers
JF Journal of the American Medical Association
JO Journal of the American Medical Association
YR 1959
FD October 17
VO 171
IS 7
SP 1042
OP 1044
DO 10.1001/jama.1959.03010250180033
UL http://dx.doi.org/10.1001/jama.1959.03010250180033
AB