Obstructive Sleep Apnea in a Severely Obese Child With Combined Central Sleep Apnea and Sleep-Related Hypoventilation Disorder Caused by a Medullary Tumor Obstructive Sleep Apnea in a Severely Obese Child With Combined Central Sleep Apnea and Sleep-Related Hypoventilation Disorder Caused by a Medullary Tumor Download Obstructive Sleep Apnea and Sleep Architecture in Adolescents With Severe Obesity: Effects of a 9-Month Lifestyle Modification Program Based on Regular Exercise and a Balanced Diet Position Paper for the Treatment of Nightmare Disorder in Adults: An American Academy of Sleep Medicine Position Paper