RT Journal
T1 QUestions and answers
JF JAMA
JO JAMA
YR 1969
FD October 13
VO 210
IS 2
SP 352
OP 353
DO 10.1001/jama.1969.03160280092041
UL http://dx.doi.org/10.1001/jama.1969.03160280092041
AB