Prolongation of REM Sleep Latency in Nightmare Disorder May Indicate Subtle REM Sleep Fragmentation and Decreased REM Sleep Propensity Prolongation of REM Sleep Latency in Nightmare Disorder May Indicate Subtle REM Sleep Fragmentation and Decreased REM Sleep Propensity Download Women’s Sleep Across the Reproductive Life Span An Unusual Cause of Obstructive Sleep Apnea in a Man With Spinal Muscular Atrophy Type III