Patients using chiropractors in North America: who are they, and why are they in chiropractic care?
Coulter ID, Hurwitz EL, Adams AH, Genovese BJ, Hays R, Shekelle PG. Patients using chiropractors in North America: who are they, and why are they in chiropractic care? Spine (Phila Pa 1976). 2002 Feb 01; 27(3):291-6; discussion 297-8.