@article{Norval_1, title={A Short Circular History of Vitamin D from its Discovery to its Effects}, volume={268}, url={http://journals.ed.ac.uk/resmedica/article/view/1031}, DOI={10.2218/resmedica.v268i2.1031}, number={2}, journal={Res Medica}, author={Norval, Mary}, year={1}, month={1}