presumption of sound condition

presumption of sound condition Sec. 312. For the purposes of section 310, every veteran shall be taken to have been in sound condition when examined, accepted, and enrolled for service, except as to defects, infirmities, or disorders noted at the time of the examination, acceptance, and enrollment, or where clear and unmistakable evidence demonstrates that the injury or 71 Stat. 97 disease existed before acceptance and enrollment and was not aggravated by such service.