[1]
N. . Hjelm, A. . Sanan, K. . Gill, E. . Sagalow, H. Krein, and R. Heffelfinger, “Economic Impact of Facial Plastic and Reconstructive Surgery: The Case Mix Index”, J Otorhinolaryngol Facial Plast Surg, vol. 6, no. 1, pp. 1–4, Dec. 2020.