SCHWARTZ, A M The effect of a respiratory enzyme on the healing of ulcers of the lower extremity; preliminary report. [electronic resource] - Angiology Feb 1953 - 18-22 p. digital Publication Type: Journal Article ISSN: 0003-3197 Standard No.: 10.1177/000331975300400103 doi Subjects--Topical Terms: EnzymesHumansLower ExtremityUlcerVaricose Veins--complicationsWound Healing