RT Journal
T1 INternational abstracts
JF JAMA
JO JAMA
YR 1989
FD February 10
VO 261
IS 6
SP 843
OP 852
DO 10.1001/jama.1989.03420060043014
UL http://dx.doi.org/10.1001/jama.1989.03420060043014
AB