TY - JOUR T1 - Fish Oil versus Cod Liver Oil: Is Vitamin D a Reason to Go Back to the Future JF - The Journal of the American Board of Family Practice JO - J Am Board Fam Med SP - 445 LP - 446 DO - 10.3122/jabfm.18.5.445-b VL - 18 IS - 5 AU - Celia M. Ross Y1 - 2005/09/01 UR - http://www.jabfm.org/content/18/5/445.1.abstract N2 - ER -