RT Journal
T1 QUestions and answers
JF JAMA
JO JAMA
YR 1969
FD December 29
VO 210
IS 13
SP 2401
OP 2402
DO 10.1001/jama.1969.03160390063033
UL http://dx.doi.org/10.1001/jama.1969.03160390063033
AB