Thumbnail: Monoamniotic twins. Häggström, Mikael (2014). "Medical gallery of Mikael Häggström 2014". WikiJournal of Medicine 1 (2). ISSN 2002-4436. Medicine 1 (2). DOI:10.15347/wjm/2014.008. ISSN 2002...Thumbnail: Monoamniotic twins. Häggström, Mikael (2014). "Medical gallery of Mikael Häggström 2014". WikiJournal of Medicine 1 (2). ISSN 2002-4436. Medicine 1 (2). DOI:10.15347/wjm/2014.008. ISSN 2002-4436. (Public Domain; Mikael Häggström via Wikipedia)