“Safety and Efficacy of Animal Derived Surfactants in Treating Preterm Infants With Respiratory Distress Syndrome: A Retrospective Cohort Study”. Archives of Clinical and Medical Case Reports 5, no. 3 (May 24, 2021): 455–465. Accessed September 11, 2026. https://fortunejournals.org/ojs/index.php/acmcr/article/view/22498.