CITATIONS

Term: sleep apnea
Http://: http://www.mayoclinic.org/diseases-conditions/sleep-apnea/basics/definition/con-20020286
Http://: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2765300/
Http://: http://www.nhlbi.nih.gov/health/health-topics/topics/sleepapnea/