RT Journal
T1 QUestions and answers
JF JAMA
JO JAMA
YR 1979
FD November 23
VO 242
IS 21
SP 2340
OP 2341
DO 10.1001/jama.1979.03300210062031
UL http://dx.doi.org/10.1001/jama.1979.03300210062031
AB