Affiliation: | 1. Hemophilia Treatment Center, University of California, San Francisco, San Francisco, CA, USA;2. Intermountain Hemophilia and Thrombosis Center Primary Children's Hospital, Salt Lake City, UT, USA;3. Division of Blood Disorders, Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA;4. The Hemophilia Center at Oregon Health and Science University, Portland, OR, USA;5. Department of Physical Therapy, University of Utah College of Health, Salt Lake City, UT, USA |