Vitamin D supplementation in patients with COPD: Twitter discussions on behalf of the University of Toronto Respirology and Sleep Journal Club
The Lancet Respiratory Medicine (2015) - Comments
doi: 10.1016/s2213-2600(15)00284-2  issn: 2213-2600  pubmed: 26282475 

Anju Anand, Navjeet Uppal, Matthew Stanbrook