Sehgal, Rahul Nasal septal and mucosal disease associated with pyoderma gangrenosum in a cocaine user. [electronic resource] - JAAD case reports Jul 2017 - 284-287 p. digital Publication Type: Case Reports; Journal Article ISSN: 2352-5126 Standard No.: 10.1016/j.jdcr.2017.05.004 doi