Does the Clinical Phenotype of Fatal Familial Insomnia Depend on PRNP codon 129 Methionine-Valine Polymorphism? Does the Clinical Phenotype of Fatal Familial Insomnia Depend on PRNP codon 129 Methionine-Valine Polymorphism? Download The Relationship between Depressive Symptoms and Obstructive Sleep Apnea in Pediatric Populations: A Meta-Analysis 2011 NIH Sleep Disorders Research Plan: A Rising Tide that Lifts all Boats