Group annotations on this page
nightsurfer on 2009-09-05An evaluation of the relative contributions of exposure to sunlight and of diet to the circulating concentrations of 25-hydroxyvitamin D in an elderly nursing home population in Boston.
Webb AR, Pilbeam C, Hanafin N, Holick MF.
Am J Clin Nutr. 1990 Jun;51(6):1075-81.