Systematic review of randomised controlled trials of over the counter cough medicines for acute cough in adults. (appliedhealth.com)
However, results of randomised controlled trials in adults do not support this hypothesis.24 — 27 (adc.bmj.com)
The report, Efficacy of infant simulator programmes to prevent teenage pregnancy: a school - based cluster randomised controlled trial in Western Australia, investigated the effect of the VIP programme on pregnancy outcomes of birth and induced abortion in Perth, Western Australia. (teachermagazine.com.au)