Obstructive Sleep Apnea after Weight Loss: A Clinical Trial Comparing Gastric Bypass and Intensive Lifestyle Intervention Obstructive Sleep Apnea after Weight Loss: A Clinical Trial Comparing Gastric Bypass and Intensive Lifestyle Intervention Download Normal Ferritin in a Patient with Iron Deficiency and RLS Obstructive Sleep Apnea and the Subsequent Risk of Depressive Disorder: A Population-Based Follow-up Study