Higher concentrations of vitamin D in Canadian children with juvenile idiopathic arthritis compared to healthy controls are associated with more frequent use of vitamin D supplements and season of birth

Sarah L. Finch, Alan Rosenberg, Anthony Kusalik, Farhad Maleki, Elham Rezaei, Adam Baxter‐Jones, Susanne M. Benseler, Gilles Boire, David A. Cabral, Sarah Campillo, Gaëlle Chédeville, Anne-Laure Chetaille, Paul Dancey, Ciarán M. Duffy, Karen Watanabe Duffy, Jaime Guzmán, Kristin Houghton, Adam M. Huber, Roman Juřenčák, Bianca Lang, R M Laxer, Kimberly Morishita, Kiem Oen, Ross E. Petty, Suzanne Ramsey, Johannes Roth, Rayfel Schneider, Rosie Scuccimarri, Elizabeth Stringer, Shirley M. L. Tse, Lori B. Tucker, Stuart E. Turvey, Michael Szafron, Susan J. Whiting, Rae S. M. Yeung, Hassan Vatanparast