1. MS Center, Department of Neurology, Multiple Sclerosis Research Group – National University of Colombia, Bogotá, Colombia
2. MS Center, Department of Nursing, Multiple Sclerosis Research Group – National University of Colombia, Bogotá, Colombia
3. Department of Neurology, Multiple Sclerosis Research Group – National University of Colombia, Bogotá, Colombia
4. Department of Statistics, National University Hospital of Colombia, Bogotá, Colombia