TY - JOUR T1 - Adaptive reasons for variation in sex ratios JF - Canadian Medical Association Journal JO - CMAJ SP - 1715 LP - 1715 DO - 10.1503/cmaj.112-2070 VL - 184 IS - 15 AU - João Alpedrinha AU - Geoff Wild Y1 - 2012/10/16 UR - http://www.cmaj.ca/content/184/15/1715.1.abstract ER -