Fig. 1From: Effectiveness of a web-based screening and brief intervention with weekly text-message-initiated individualised prompts for reducing risky alcohol use among teenagers: study protocol of a randomised controlled trial within the ProHEAD consortiumTrial flow diagram. Note: * refers to the proposed sample size, TIP text-message-based individualised prompt, TA text-message-based assessment, CP central project (ProHEAD project), SP3 sub-project 3 (ProWISE-TIP trial)Back to article page