Two controlled trials to increase participant retention in a randomized controlled trial of mobile phone-based smoking cessation support in the United Kingdom
Severi, E., Free, C., Knight, R., Robertson, S., Edwards, P., Hoile, E.Volume:
8
Language:
english
Journal:
Clinical Trials
DOI:
10.1177/1740774511416524
Date:
October, 2011
File:
PDF, 115 KB
english, 2011