“…Fourteen articles reported the results of randomized controlled trials, 14 , 16 , 17 , 19 , 24 – 33 two reported the results of controlled clinical trials, 34 , 35 one reported the results of a crossover clinical trial, 36 two reported the results of cohort studies, 6 , 37 and seven reported the results of uncontrolled before–after studies. 15 , 38 – 43 Eleven of the 26 trials described the effects of behavioral interventions when conducted along with cointerventions, including motivational enhancement therapy, 14 , 16 , 26 , 28 , 33 relaxation-control treatment, 14 cognitive behavioral therapy, 16 , 31 , 38 drug counseling, 16 multidisciplinary adherence support, 39 motivational interviewing, 39 and instructional materials or information. 32 , 40 , 41…”