Pyoderma gangrenosum: a too often overlooked facultative paraneoplastic disease Medical Health News, 23 Jun 2019 1. Al Ghazal P, Herberger K, Schaller J, Strölin A, Hoff NP, Goerge T, Roth H, Rabe E, Karrer S, Renner R, Maschke J, Horn T…