Protracted SARS‐CoV‐2 pneumonia with rituximab treatment: About two cases. Issue 7 (14th March 2021) - Gerber, Victor; Velay, Aurélie; Boehn, Louis; Solis, Morgane; Kaeuffer, Charlotte; Rougier, Estelle; Ursenbach, Axel; Hansmann, Yves; Lefebvre, Nicolas; Danion, François; Ruch, Yvon