title: [Report on the 2d International Congress on the Study of Twins].
mesh_terms: D003226:Congresses as Topic; D004219:District of Columbia; D005260:Female; D006801:Humans; D007390:International Agencies; D011247:Pregnancy; D012955:Societies, Medical; D014427:Twins
vernacular_title: Zpráva o 2. mezinárodním kongresu o studiu dvojcat.