Tinaztepe, B, et al. “Clinico-Pathological Evaluation of 37 Cases of Cystic Fibrosis of the Pancreas in Infancy at Necropsy”. The Turkish Journal of Pediatrics, vol. 17, no. 3-4, Jan. 1975, pp. 108-1, https://turkjpediatr.org/article/view/4236.