PO.8.165 Whole-blood dna methylation analysis reveals respiratory environmental traits involved in COVID-19 severity following SARS-CoV-2 infection by S Rojo-rello, D Bernardo, G Barturen, ME Alarcón-Riquelme, E Carnero-Montoro, M Martínez-Bueno, B Sobrino, C Alcántara-Domínguez