Telemedicine in primary healthcare for the quality of care in times of COVID-19: a scoping review protocol - Silva, Cicera Renata Diniz Vieira; Lopes, Rayssa Horácio; Bay Júnior, Osvaldo de Goes; Fuentealba-Torres, Miguel; Arcêncio, Ricardo Alexandre; Uchoa, Severina Alice da Costa (BMJ Open, 2021)