Therapy implications of transtho- racic echocardiography in acute ischemic stroke patients. Stroke. 539. Vitebskiy S, Fox K, Hoit BD. Routine transesophageal echocardiography fortheevaluationofcerebralemboliinelderlypatients.Echocardiography. 540. Kim JT, Park MS, Choi KH, Cho KH, Kim BJ, Han MK, Park TH, Park SS, Lee KB, Lee BC, et al. Different antiplatelet strategies in patients with new ischemic stroke while taking aspirin. Stroke. 2016;47:128 134. 541. Lee M, Wu YL, Saver JL, Lee HC, Lee JD, Chang KC, Wu CY, Lee TH, Wang HH, Rao NM, et al. Is clopidogrel better than aspirin following breakthrough strokes while on aspirin? A retrospective cohort study. BMJ Open. 2014;4:e006672. doi: 10.1136/bmjopen-2014-006672 542. Aronow HD, Novaro GM, Lauer MS, Brennan DM, Lincoff AM, Topol EJ, Kereiakes DJ, Nissen SE. In-hospital initiation of lipid-low- ering therapy after coronary intervention as a predictor of long-term uti- lization: a propensity analysis. Arch Intern Med. 2003;163:2576 2582. 543. Stead LF, Koilpillai P, Fanshawe TR, Lancaster T. Combined phar- macotherapy and behavioural interventions for smoking ces- sation. Cochrane Database Syst Rev. 2016;3:CD008286. doi: 544. Stead LF, Koilpillai P, Lancaster T. Additional behavioural support as an adjunct to pharmacotherapy for smoking cessation. Cochrane Database Syst Rev. 2015:CD009670. doi: 10.1002/14651858.CD009670.pub3