RT Journal
T1 QUestions and answers
JF JAMA
JO JAMA
YR 1969
FD December 22
VO 210
IS 12
SP 2290
OP 2291
DO 10.1001/jama.1969.03160380104041
UL http://dx.doi.org/10.1001/jama.1969.03160380104041
AB