RT Book, Section A1 Nguyen, Giang A2 Phillips, Raymond E. SR Print(0) ID 1175312569 T1 Ulcer T2 Venous Insufficiency YR 2021 FD 2021 PB McGraw Hill PP New York, NY SN 9781260461268 LK dermatology.mhmedical.com/content.aspx?aid=1175312569 RD 2024/04/16 AB The most vexing complication of venous insufficiency—the ulcer—poses three levels of burden: