title: Intrinsic risk factors for hamstring injuries among male soccer players: a prospective cohort study.
authors.affiliation: Oslo Sports Trauma Research Center, Norwegian School of Sports Sciences, Ullevål Stadion, Oslo, Norway. Anders.Engebretsen@nih.no
authors.forename: Anders Hauge
authors.initials: AH
authors.lastname: Engebretsen
authors.forename: Grethe
authors.initials: G
authors.lastname: Myklebust
authors.forename: Ingar
authors.initials: I
authors.lastname: Holme
authors.forename: Lars
authors.initials: L
authors.lastname: Engebretsen
authors.forename: Roald
authors.initials: R
authors.lastname: Bahr