PT - JOURNAL ARTICLE AU - João Alpedrinha AU - Geoff Wild TI - Adaptive reasons for variation in sex ratios AID - 10.1503/cmaj.112-2070 DP - 2012 Oct 16 TA - Canadian Medical Association Journal PG - 1715--1715 VI - 184 IP - 15 4099 - http://www.cmaj.ca/content/184/15/1715.1.short 4100 - http://www.cmaj.ca/content/184/15/1715.1.full SO - CMAJ2012 Oct 16; 184