Botelho, PCarvalho, AFTorrão, HLeão, P2013-10-252013-10-252013BMJ Case Rep. 2013 Jul 17;2013. pii: bcr2013009667http://hdl.handle.net/10400.23/522engPneumoperitoneoCoitoWhat is in? Pneumoperitoneum after sexual intercoursejournal article