Perioral swelling in a previously well child
Rowena Walker, Kathryn Ferris, Maura Scott, Naomi McMahon, Andras Szabo, Alistair C Dick, Sharon Christie, Peter Mallett
Archives of Disease in Childhood - Education and Practice Apr 2021, edpract-2020-319223; DOI: 10.1136/archdischild-2020-319223