Mesenchymal Stem Cells for the Treatment of Complex Anovaginal and Rectovaginal Fistulas in Crohn's Disease: A Systematic Review - Kleuber Arias Meireles Martins; Isabela Coutinho Faria; Leonardo Januário Campos Cardoso; Pedro Henrique Gibram Gontijo; Ana Júlia da Silva Oliveira Bittarães; Mariana Menezes Corcinio; Bárbara Nogueira Braga; Mariana Lisboa de Jesus (Journal of Coloproctology, 2025)