TY  - GEN
AU  - Lappe,Joan M
AU  - Heaney,Robert P
TI  - Why randomized controlled trials of calcium and vitamin D sometimes fail
SN  - 1938-1980
PY  - 2012///1002
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.4161/derm.19833
ER  -