Early humoral response among lung transplant recipients vaccinated with BNT162b2 vaccine. Issue 6 (June 2021) - Shostak, Yael; Shafran, Noa; Heching, Moshe; Rosengarten, Dror; Shtraichman, Osnat; Shitenberg, Dorit; Amor, Shai M; Yahav, Dafna; Ben Zvi, Haim; Pertzov, Barak; Kramer, Mordechai R