Carrillo-Aybar, Yosselly Ninoska, Renato Moreno-Gonzales, and María Victoria Quispe-Gómez. 2020. “Spinal Anesthesia for C-Section in Patients With Protein S Deficiency: Case Report and Literature Review”. Colombian Journal of Anesthesiology 48 (1):45-49. https://www.revcolanest.com.co/index.php/rca/article/view/176.