Divergences on expected pneumonia cases during the COVID-19 epidemic in Catalonia: a time-series analysis of primary care electronic health records covering about 6 million people oleh Ermengol Coma, Leonardo Méndez-Boo, Núria Mora, Carolina Guiriguet, Mència Benítez, Francesc Fina, Mireia Fàbregas, Elisabet Balló, Francisa Ramos, Manuel Medina, Josep M. Argimon