The Effect of Ostrich Oil on Pain, Healing, and Recurrence of Chronic Anal Fissure: A Randomized Controlled Double-Blind Clinical Trial. - Taghizadeh M; Kourki Nejad Gharaee Z; Bazmandegan G; Kamiab Z; Zakeri MA; Xu X; Jawed I; Gholamrezapour M; Madahian AM (Health science reports, 2026)