PT - JOURNAL ARTICLE AU - Felicity Liew AU - Claudia Efstathiou AU - Peter JM Openshaw TI - Long Covid: clues about causes AID - 10.1183/13993003.00409-2023 DP - 2023 Jan 01 TA - European Respiratory Journal PG - 2300409 4099 - http://erj.ersjournals.com/content/early/2023/03/15/13993003.00409-2023.short 4100 - http://erj.ersjournals.com/content/early/2023/03/15/13993003.00409-2023.full