Effect of Crocus sativus L. (saffron) and crocin in the treatment of patients with type-2 diabetes mellitus: a systematic review and meta-analysis - Amatto, Pedro de Padua G.; Chaves, Lucas; Braga, Giovana Graça; Carmona, Fabio; Pereira, Ana Maria Soares (Journal of Ethnopharmacology, 2024)