The impact of the COVID-19 pandemic on healthcare services utilization among people living with HIV in Catalonia, Spain: A population-based cohort study Yi-Hua Pan; Daniel K. Nomah; Marcos Montoro-Fernandez; Sergio Moreno-Fornés; Yesika Díaz; Jordi Aceitón; Andreu Bruguera; Josep M. Llibre; Pere Domingo; Arkaitz Imaz; Ingrid Vilaró; Vicenç Falcó; Juliana Reyes-Urueña; José M. Miro; Jordi Casabona;