Veena, Asthna, S. S. Bist, B . Bharti, and Shreesh Mehrotra. “Removal of an Aspirated Open Safety Pin from Trachea”. Anaesthesia, Pain & Intensive Care (January 27, 2019): 416-418. Accessed November 22, 2024. https://mail.apicareonline.com/index.php/APIC/article/view/344.