The phase I RELEASE clinical trial to evaluate the safety of NK cells in COVID-19 - Hernandez-Balnco, Clara; Al-Akioui-Sanz, Karima; Herrera, Lara; Aguirre-Portoles, Cristina; Lozano-Ojalvo, Daniel; Perez-Rodriguez, Leticia; Cano-Ochando, Jordi; Guerra-Garcia, Pilar; Martin-Quiros, Alejandro; Vicario, Jose Luis; Santos, Silvia; Perez-Vaquero, Miguel Angel; et al. (iScience, 2025)