Ford, AC; Moayyedi, P; Hanauer, SB (5 de febreiro de 2013). "Ulcerative colitis.". BMJ (Clinical research ed.)346: f432. PMID23386404. doi:10.1136/bmj.f432.
Ford, AC; Moayyedi, P; Hanauer, SB (5 de febreiro de 2013). "Ulcerative colitis.". BMJ (Clinical research ed.)346: f432. PMID23386404. doi:10.1136/bmj.f432.