Epidemiology of multimorbidity and implications for health care, research, and medical education: a cross-sectional study
Karen Barnett
,
Stewart W Mercer
,
Michael Norbury
,
Karen Barnett
,
Stewart W Mercer
,
Michael Norbury
,
Graham Watt
,
Sally Wyke
,
Bruce Guthrie
2012
The Lancet
6,693 citations