biostudies-literatureUnknown110(4)Hiam LJournal of the Royal Society of Medicine131-137https://www.ebi.ac.uk/biostudies/studies/S-EPMC5407518biostudies-literatureWhat caused the spike in mortality in England and Wales in January 2015?PMC5407518Harrison DHiam LDorling DMcKee MfalseWhat caused the spike in mortality in England and Wales in January 2015?2017-01-01T00:00:00Z2017 Apr2025-04-27T00:34:50.244Z2025-04-06T17:55:34.119ZS-EPMC54075182820802410.1177/0141076817693600