Surgical treatment of sacral pressure injury in ambulating patients during the COVID-19 pandemic: a prospective cohort with complications analysis and elaboration of a surgical treatment protocol - Nicolas, Gregory; Ferreira, Joao; Valente, Daniel; Abbas, Laielly; Saliba, Marita; Milcheski, Dimas; Monteiro junior, Araldo; Gemperli, Rolf (Journal of plastic reconstructive and aesthetic surgery, 2024)