title: Collision sports and risk of bleeding in children with hemophilia.
authors.forename: Marilyn J
authors.initials: MJ
authors.lastname: Manco-Johnson
mesh_terms: D015444:Exercise; D005260:Female; D006467:Hemophilia A / Q000150:complications*; D002836:Hemophilia B / Q000150:complications*; D006470:Hemorrhage / Q000453:epidemiology*; D006801:Humans; D008297:Male