Immunogenicity and safety of BNT162b2 mRNA vaccine booster in actively treated patients with cancer. Issue 2 (February 2022) - Ligumsky, Hagai; Dor, Herut; Etan, Tal; Golomb, Inbal; Nikolaevski-Berlin, Alla; Greenberg, Inbal; Halperin, Tamar; Angel, Yoel; Henig, Oryan; Spitzer, Avishay; Slobodkin, Marina; Wolf, Ido; et al.