PT - JOURNAL ARTICLE AU - Jeff McMahan TI - Genetic modification of characteristic masculine traits: enhancement or deformity? AID - 10.1136/medethics-2012-100976 DP - 2013 Dec 01 TA - Journal of Medical Ethics PG - 736--740 VI - 39 IP - 12 4099 - http://jme.bmj.com/content/39/12/736.short 4100 - http://jme.bmj.com/content/39/12/736.full SO - J Med Ethics2013 Dec 01; 39