PT - JOURNAL ARTICLE AU - F Simonstein TI - Human enhancement and factor X AID - 10.1136/jme.2006.019919 DP - 2008 Feb 01 TA - Journal of Medical Ethics PG - 102--103 VI - 34 IP - 2 4099 - http://jme.bmj.com/content/34/2/102.short 4100 - http://jme.bmj.com/content/34/2/102.full SO - J Med Ethics2008 Feb 01; 34