less than 20 ng/mL (1,2). The Endocrine Society went on to further define vitamin D insufficiency as a level between 21 and 29 ng/mL (2). 1. ION (Institute of Medicine). 2010. Dietary reference intakes for calcium and D. Washington DC: The National Academies Press. 2. Bolick MF, Binkley NC, Bischoff-Ferrari HA, e

Center Prize in Medicine and Biomedical Research, Millennium Technology Prize. ■ Member of US National Academy of Sciences, of Engineering and of Institute of Medicine. K Considered a pioneer of many new technologies, including transdermal delivery systems, which allow the administration of drugs or extraction of