The Adolescent Vaping Epidemic in the United States—How It Happened and Where We Go From Here Zainab Farzal, MD, MPH; Martha F. Perry, MD; Wendell G. Yarbrough, MD, MMHC; et al. ORIGINAL INVESTIGATION Anatomic Distribution of the Morphologic Variation of the Upper Lip Frenulum Among Healthy Newborns Shagnik Ray, BA; William Christopher Golden, MD; Jonathan Walsh, MD CLINICAL CHALLENGE Endoscopy Mucocutaneous Lesions in an Adult Man Who Recently Moved From Mexico Christopher Mularczyk, MD; Matthew Moynihan, DO; Jeffrey Yu, MD Earn CME credit RESEARCH LETTER Use and Cost of a Hypoglossal Nerve Stimulator Device for Obstructive Sleep Apnea Between 2015 and 2018 Vinay K. Rathi, MD; Neil S. Kondamuri, BA; Matthew R. Naunheim, MD, MBA; et al. OBSERVATION Transnasal-Transpterygoid Endoscopic Removal of an 18F–Choline-Avid Parathyroid Carcinoma Metastasis in the Skull Base Grégoire B. Morand, MD, MSc; Niels J. Rupp, MD; Martin W. Huellner, MD; et al.

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Association of Pediatric Patient Demographic Factors and Scar Anatomic Features With Scar Outcomes After Surgical Repair of Cleft Lip