Mawlood Qassab, Alan, and Shehab Hamad. “Comparison Between Diode Laser and Scalpel for Lip Lengthening in Patients With Gummy Smile”. Journal of Baghdad College of Dentistry 31, no. 1 (March 15, 2019): 60-64. Accessed November 19, 2019. http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/2580.