Recurrent microinvasive subungueal squamous cell carcinoma in an HIV patient: a case of good response to photodynamic therapy - Alessandrini, Aurora; Evangelista, Valeria; Barisani, Alessia; Vaccari, Sabina; Dika, Emi; Piraccini, Bianca Maria; Starace, Michela (Dermatology Practical & Conceptual, 2022)