Fig. 1From: Neem-silicone lotion and ultrasound nit comb: a randomised, controlled clinical trial treating head louse infestationFlowchart of participant progress through the study. The flowchart shows the numbers of participants in each of the randomised study groups and their progress through the treatment phase of the study. All participants were treated on day 0 and day 7 and assessments of outcome were made on days 2, 6, 9, and 14 (not shown on flowchart)Back to article page