Vitamin D in the prevention of exacerbations of asthma in preschoolers (DIVA): protocol for a multicentre randomised placebo-controlled triple-blind trial by Mohsen Sadatsafavi, Megan E Jensen, Francine M Ducharme, Nathalie Alos, Geneviève Mailhot, Benoît Mâsse, John H White, Ali Khamessan, Sze Man Tse, Reza Alizadehfar, Dirk E Bock, Patrick Daigneault, Chantal Lemire, Connie Yang, Dhenuka Radhakrishnan

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Study protocol for the Sino-Canadian Healthy Life Trajectories Initiative (SCHeLTI): a multicentre, cluster-randomised, parallel-group, superiority trial of a multifaceted communit... by Jun Zhang, Jian Shen, Hong Jiang, Jian Xu, Louise Mâsse, Zhong-Cheng Luo, Lise Dubois, Bartha Knoppers, Jiahao Wu, Liping Wang, Benoît Mâsse, Fengxiu Ouyang, Wenguang Sun, Isabel Fortier, Sonia Semenic, Yanting Wu, Isabelle Marc, Luigi Bouchard, Jianxia Fan, Peter C K Leung, Xiang Peng Liao, C M Herba, Linda Booij, Antoine Lewin, Weibin Wu, Chen Lei, Anita Kozyrskyj, N Chaillet, Janelle Zhan, Catherine Allard

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