RT Journal
T1 QUestions and answers
JF Journal of the American Medical Association
JO Journal of the American Medical Association
YR 1959
FD April 18
VO 169
IS 16
SP 1967
OP 1968
DO 10.1001/jama.1959.03000330139025
UL http://dx.doi.org/10.1001/jama.1959.03000330139025
AB