2006年发表在JournalofNeurogenetics一份研究中,多伦多贝加斯医院学家招募了一个由姐弟俩和他亲生父母组成家庭。
In a 2006 study published in the Journal of Neurogenetics, psychologists at Baycrest Hospital in Toronto recruited families composed of an adult brother and sister and their biological parents.