Mark J Bolland associate professor, Alison Avenell professor, Karen Smith consultant clinical scientist, Miles D Witham professor, Andrew Grey associate professor
Bolland M J, Avenell A, Smith K, Witham M D, Grey A.
Vitamin D supplementation and testing in the UK: costly but ineffective?
BMJ 2021; 372 :n484
doi:10.1136/bmj.n484