Carneiro, Carla, 		Rocha, Ricardo, 		Marinho, Rui, 		Leichsenring, Carlos, 		Geraldes, Vasco, AND 		Nunes, Vitor.
" Extralevator Abdominoperineal Excision – Review" <em>Revista Portuguesa de Cirurgia</em> [Online],  Number 42 (30 September 2017)