RT Journal
T1 BRazil
JF Journal of the American Medical Association
JO Journal of the American Medical Association
YR 1959
FD August 22
VO 170
IS 17
SP 2121
OP 2122
DO 10.1001/jama.1959.63010170019019
UL http://dx.doi.org/10.1001/jama.1959.63010170019019
AB