Fatigue

• Childrens Hospital of Colorado — Aurora, Colorado, United States
• University of Iowa Hospital — Iowa City, Iowa, United States
• Childrens Hospital Boston — Boston, Massachusetts, United States
• Cincinnati Childrens Hospital — Cincinnati, Ohio, United States

• Oregon Health & Science University Multiple Sclerosis Center. — Portland, Oregon, United States

• Centro Universitário São Camilo — Cachoeiro de Itapemirim, Espírito Santo, Brazil

Not specified

Not specified

Not specified

• University of Rijeka, Faculty of Medicine, Department of Physiology, Immunology and Pathophysiology — Rijeka, Croatia

• Clinica DFK — Madrid, Spain

• University of Illinois at Urbana-Champaign — Urbana, Illinois, United States

• Rehazentrum Wilhelmshaven — Wilhelmshaven, Lower Saxony, Germany