Do safety baseballs and faceguards really make a difference?
D001484:Baseball / Q000293:injuries*; D002648:Child; D005151:Facial Injuries / Q000209:etiology / Q000517:prevention & control*; D006260:Head Protective Devices; D006801:Humans; D012449:Safety; D014949:Wounds, Nonpenetrating / Q000517:prevention & control