A placebo-controlled, crossover trial to investigate the efficacy of tiotropium bromide or placebo added to usual care in stable symptomatic post-hematopoietic stem cell transplantation (HSCT) bronchiolitis obliterans syndrome (BOS). - Dini, Naeemeh; Khoshbin, Amin Pastaki; Aliannejad, Rasoul; Bakhshandeh, Hooman; Najafizadeh, Katayoun; Mehdizadeh, Mahshid; Amini, Shahideh (Trials, 2024)