Vitamin D supplementation in chronic spinal cord injury (VitD-SCI): study protocol for a randomised controlled trial.

Hertig-Godeschalk A, Brinkhof MWG, Scheel-Sailer A, Perret C, Jenny A, Wyss PO, Landmann G, Flueck JL: Vitamin D supplementation in chronic spinal cord injury (VitD-SCI): study protocol for a randomised controlled trial. BMJ Open. 2021