Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data
BMJ (2017) - Comments
pubmed: 28202713  doi: 10.1136/bmj.i6583  issn: 1756-1833  issn: 0959-8138 

Adrian R Martineau, David A Jolliffe, Richard L Hooper, Lauren Greenberg, John F Aloia, Peter Bergman, Gal Dubnov-Raz, Susanna Esposito, Davaasambuu Ganmaa, Adit A Ginde, Emma C Goodall, Cameron C Grant, Christopher J Griffiths, Wim Janssens, Ilkka Laaksi, Semira Manaseki-Holland, David Mauger, David R Murdoch, Rachel Neale, Judy R Rees