A multisystem approach by bed-side ultrasound in patients with COVID-19 infection: a case series oleh Gabriele Cioni, Ginevra Bellandi, Stefano Bertolini, Giacomo Betti, Wanda Bialek, Angela Fedeli, Marco Antonio Lumini, Roberto Michelotti, Carmelo Muscari, Francesca Pacini, Sabrina Pastacaldi, Rossella Squillante, Francesco Tola, Antonio Vergara, Emiliano Votino, Mauro Zuccotti, Fabio Daviddi