Çıtak EÇ, Ak E, Sağcan F, Balcı Y, Bozdoğan-Arpacı R, Kuyucu N. Primary pulmonary Langerhans cell histiocytosis associated with smoking in an adolescent boy. Turk J Pediatr 2017; 59: 586-589. https://doi.org/10.24953/turkjped.2017.05.013