RT Journal Article SR Electronic T1 Loneliness and social isolation as risk factors for CVD: implications for evidence-based patient care and scientific inquiry JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 987 OP 989 DO 10.1136/heartjnl-2015-309242 VO 102 IS 13 A1 Holt-Lunstad, Julianne A1 Smith, Timothy B YR 2016 UL http://heart.bmj.com/content/102/13/987.abstract AB