RT Journal Article SR Electronic T1 Efficacy of implementation intentions intervention on prevention of smoking among adolescents JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 81 OP 82 DO 10.1136/ebn1162 VO 14 IS 3 A1 Ferreira, Maria Margarida da Silva Reis dos Santos YR 2011 UL http://ebn.bmj.com/content/14/3/81.abstract AB