0399 Patient Preference and Nocturnal Experience With Sodium Oxybate Treatment for Narcolepsy: Interim Data From RESTORE-V45IS1 0399 Patient Preference and Nocturnal Experience With Sodium Oxybate Treatment for Narcolepsy: Interim Data From RESTORE-V45IS1 Download 0398 Is Increased Serum Prolactin Associated with Excessive Daytime Sleepiness? A Proof-of-Concept Analysis-V45IS1 0400 Sleep Onset REM Period (SOREMP); Beyond the Diagnostic Marker-V45IS1