Gut microbiota dysbiosis, sarcopenia, osteoporosis and osteosarcopenia in older people: A systematic review protocol - Nailton José Neto; Mário Duarte Brito; Cristiano dos Santos Gomes; Luana Caroline de Assunção Cortez Corrêa; Gerlane Coelho Bernardo Guerra; Ricardo Oliveira Guerra (PLoS ONE, 2025)