Impact of supplementation with iron–folic acid (IFA) and vitamin D3 compared with IFA alone on haemoglobin levels in elderly people with mild-to-moderate anaemia: protocol for the double-blind, randomised, placebo-controlled Iron and vitamin D trial in Elderly Anemia (IDEA)
Farhad Ahamed, Abhishek Jaiswal, S. Sahoo, Tandra Ghosh, Amandeep Kaur, Tanveer Rehman, Kalyan Goswami
BMJ Open