title: Rugby union.
authors.forename: J P R
authors.initials: JP
authors.lastname: Williams
mesh_terms: D005538:Football / Q000293:injuries*; D015658:HIV Infections / Q000097:blood; D006260:Head Protective Devices; D006801:Humans; D009064:Mouth Protectors; D019838:Neck Injuries / Q000517:prevention & control*; D019876:Sports Equipment