American College of Foot and Ankle Surgeons/Foot Health Facts   http://www.foothealthfacts.org/

American Academy of Podiatric Sports Medicine   http://www.aapsm.org/

American Board of Podiatric Surgery   http://www.abps.org/

American Podiatric Medical Association   http://www.apma.org/

National Library of Medicine   http://www.nlm.nih.gov/

American Running & Fitness Association   http://www.americanrunning.org/

Online Medical Dictionary   http://medical-dictionary.com/

Excellence Shockwave   http://www.eswtusa.com/

Rochester Shockwave   http://www.rochestershockwave.com/