Efficacy of food fortification on serum 25-hydroxyvitamin D concentrations: systematic reviewSiobhan O’Donnell, Fatemeh Yazdi, Daylily S Ooi et al.|American Journal of Clinical Nutrition|2008Cited by 102
A surveillance system to assess the need for updating systematic reviewsNadera Ahmadzai, Paul G Shekelle, Sydne J Newberry et al.|Systematic Reviews|2013Cited by 34
Surveillance and Identification of Signals for Updating Systematic Reviews: Implementation and Early ExperienceSydne J Newberry, Paul G Shekelle, David Moher et al.|Unknown|2013Cited by 6