Variable phenotypes in congenital central hypoventilation syndrome with PHOX2B nonpolyalanine repeat mutations Variable phenotypes in congenital central hypoventilation syndrome with PHOX2B nonpolyalanine repeat mutations Download Treatment usage patterns of oral appliances for obstructive sleep apnea over the first 60 days: a cluster analysis Apnea-hypopnea index vs oxygen desaturation index for diagnosis of obstructive sleep apnea in patients with atrial fibrillation: six of one, half a dozen of the other?