Effectiveness of the BNT162b2 mRNA Covid-19 vaccine in Spanish healthcare workers Concepción Núñez López; Juan Manuel González de Abreu; Verónica Pérez-Blanco; Rosa de Miguel Buckley; María Pilar Romero Gómez; Marta Díaz-Menéndez;

Efficacy and safety of hydroxychloroquine in healthcare professionals with mild SARS-CoV-2 infection: Prospective, non-randomized trial Antonia Agusti; Elena Guillen; Alfonso Ayora; Andres Anton; Cristina Aguilera; Xavier Vidal; Cristina Andres; Manuel Alonso; Meritxell Espuga; Juliana Esperalba; Mª Queralt Gorgas; Benito Almirante; Esteban Ribera;