TY - JOUR T1 - Some opinions on longevity. 1954 JF - Canadian Medical Association Journal JO - CMAJ SP - 418 LP - 420 VL - 148 IS - 3 AU - H. N. Segall Y1 - 1993/02/01 UR - http://www.cmaj.ca/content/148/3/418.abstract ER -