Shinagawa, Adriana, Fernando Elias Melhem, Antônio Carlos de Campos, Domingos Dias Cicarelli, and Elke Frerichs. 2015. “Predictors of Pain and Prolonged Length of Stay After Orthognathic Surgery: A Retrospective Cohort Study”. Colombian Journal of Anesthesiology 43 (2):129-35. https://www.revcolanest.com.co/index.php/rca/article/view/431.