1. Osteoarthritis. Differentiation from rheumatoid arthritis, causes of pain, treatment;Altman;Postgrad Med,1990
2. Does back pain prevalence really decrease with increasing age? A systematic review
3. Bone Health Among Aging Baby Boomers
4. Committee on Advancing Pain Research, Care, and Education, Institute of Medicine. Relieving Pain in America: A Blueprint for Transforming Prevention, Care, Education, and Research. Washington, DC: The National Academies Press; 2011.
5. Dworkin SF Sherman JJ . Relying on objective and subjective measures of chronic pain: Guidelines for use and interpretation. In: Turk DC Melzack R , eds. Handbook of Pain Assessment. New York: Guilford Press; 2001:619–638.