Mayo Clinic Staffs. Mayo Foundation for Medical Education and Research, 26 Jan. 2013. Web. 17 Apr. 2014.
Mayo Clinic Staff. (2013). Osteoarthritis. Retrieved from: http://www.mayoclinic.com/health/osteoarthritis/DS00019 8.) Shiel, W. (2013).
"Definition." Mayo Clinic. Mayo Foundation for Medical Education and Research, 12 June 2012. Web. 15 Dec. 2013.
U.S. National Library of Medicine, 03 Apr. 2013. Web. 18 Feb. 2014. Mayo, Clinic Staff.
Mayo Clinic. Mayo Foundation for Medical Education and Research, 1 9 2012. Web. 21 Nov 2013. Scott, Olivia.
Mayo Clinic. Mayo Foundation for Medical Education and Research, 16 Jan. 2013. Web. 05 Dec. 2013.
Staff, Mayo Clinic. "Definition." Mayo Clinic. Mayo Foundation for Medical Education and Research, 07 June 2013. Web.
U.S. National Library of Medicine, 20 Dec. 2013. Web. 27 Apr. 2014. Mayo Clinic Staff.
Seattle: A.D.A.M., 2012. MedlinePlus. 18 Nov. 2013. Mayo Clinic Staff. Cystic Fibrosis.
: Mayo Clinic Scientific Press. The Mayo Clinic. (n.d.). Retrieved May 19, 2014 from http://www.mayoclinic.org/about-mayo-clinic/health-policy-center