Firat Koca, Cigdem, Tuba Bayindir, Erdinc Koca, and Ahmet Kizilay. 2021. “Percutaneous or Surgical Tracheotomy When, Why, and Selection Criteria”. Annals of Medical Research 23 (3):0347-52. http://www.annalsmedres.org/index.php/aomr/article/view/2270.