Muscle strength and muscle mass as predictors of hospital length of stay in patients with moderate to severe COVID-19: a prospective observational study - Gil, Saulo; Jacob Filho, Wilson; Shinjo, Samuel Katsuyuki; Ferriolli, Eduardo; Busse, Alexandre Leopold; Avelino-Silva, Thiago Junqueira; Longobardi, Igor; Oliveira Junior, Gersiel Nascimento de; Swinton, Paul; Gualano, Bruno; Roschel, Hamilton (Journal of cachexia, sarcopenia and muscle, 2021)