RT Journal A1 Bergen RP T1 LAw and medicine JF JAMA JO JAMA YR 1969 FD July 21 VO 209 IS 3 SP 479 OP 480 DO 10.1001/jama.1969.03160160097043 UL http://dx.doi.org/10.1001/jama.1969.03160160097043 AB