RT Journal Article SR Electronic T1 The burden of hospital-acquired COVID-19: the Welsh and international experience JF Future Healthcare Journal JO Future Healthc J FD Royal College of Physicians SP 9 OP 10 DO 10.7861/fhj.9-2-s9 VO 9 IS Suppl 2 A1 Mark Ponsford YR 2022 UL http://www.rcpjournals.org/content/9/Suppl_2/9.abstract AB