Media type: E-Article Title: How can self-efficacy be increased? Meta-analysis of dietary interventions Contributor: Prestwich, Andrew; Kellar, Ian; Parker, Richard; MacRae, Siobhan; Learmonth, Matthew; Sykes, Bianca; Taylor, Natalie; Castle, Holly imprint: Informa UK Limited, 2014 Published in: Health Psychology Review Language: English DOI: 10.1080/17437199.2013.813729 ISSN: 1743-7199; 1743-7202 Origination: Footnote: