See related article on p. 544
Amsterdam, the Netherlands
Financial Disclosure: None reported.
Funding/Support: Dr Daniels has received grants from the Netherlands Organisation for Health Research and Development (ZonMw) and the Maag, Lever en Darm Stichting (Stomach, Liver, and Bowel Foundation). Dr Boermeester has received several grants for studies/trials outside of this article.
Correspondence: Marja A. Boermeester, Ph.D., P.O. Box 22660, 1100 DD Amsterdam, the Netherlands. E-mail: firstname.lastname@example.org