This experiment is investigating the metabolome of men, healthy women, and women with Polycystic Ovary Syndrome (PCOS) with and without Obstructive Sleep Apnea (OSA).
The following comparisons are made: 
 - fasting vs. slow wave sleep onset
 - OSA- vs OSA+
 - men vs women
 - the impact of Continuous Positive Airways Pressure (CPAP)
 - PCOS women vs control women vs men