Hemorrhoids. EBSCO DynaMed website. Available at:
http://www.ebscohost.com/dynamed. Updated March 21, 2013. Accessed May 23, 2013.
Living with hemorrhoids. American Gastroenterological Association website. Available at:
http://www.gastro.org/patient-center/digestive-conditions/hemorrhoids. Published April 25, 2010. Accessed May 23, 2013.
6/2/2011 DynaMed's Systematic Literature Surveillance
http://www.ebscohost.com/dynamed: Mills E, Eyawo O, Lockhart I, Kelly S, Wu P, Ebbert JO.
Smoking cessation reduces postoperative complications: a systematic review and meta-analysis.
Am J Med.