RT Journal A1 Hall GE T1 LAw and medicine JF JAMA JO JAMA YR 1969 FD January 20 VO 207 IS 3 SP 627 OP 628 DO 10.1001/jama.1969.03150160117039 UL http://dx.doi.org/10.1001/jama.1969.03150160117039 AB