Medical opinion.
Medical opinion. Unless the medical evidence is clear, convincing and leaves no doubt as to the person's incompetency, the rating agency will make no determination of incompetency without a definite expression regarding the question by the responsible medical authorities. Considerations of medical opinions will be in accordance with the principles in paragraph (a) of this section. Determinations relative to incompetency should be based upon all evidence of record and there should be a consistent relationship between the percentage of disability, facts relating to commitment or hospitalization and the holding of incompetency.