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The effect of two lottery-style incentives on response rates to postal questionnaires in a prospective cohort study in preschool children at high risk of asthma: a randomized trial.
van der Mark LB, van Wonderen KE, Mohrs J, Bindels PJ, Puhan MA, Ter Riet G. van der Mark LB, et al. Among authors: puhan ma. BMC Med Res Methodol. 2012 Dec 18;12:186. doi: 10.1186/1471-2288-12-186. BMC Med Res Methodol. 2012. PMID: 23249323 Free PMC article. Clinical Trial.
Variability in diagnostic probability estimates.
Puhan MA, Steurer J, Bachmann LM, ter Riet G. Puhan MA, et al. Ann Intern Med. 2004 Oct 5;141(7):578-9. doi: 10.7326/0003-4819-141-7-200410050-00028. Ann Intern Med. 2004. PMID: 15466782 No abstract available.
Sample sizes of studies on diagnostic accuracy: literature survey.
Bachmann LM, Puhan MA, ter Riet G, Bossuyt PM. Bachmann LM, et al. Among authors: puhan ma. BMJ. 2006 May 13;332(7550):1127-9. doi: 10.1136/bmj.38793.637789.2F. Epub 2006 Apr 20. BMJ. 2006. PMID: 16627488 Free PMC article. Review.
419 results