Development and validation of a childhood self‐efficacy for functional constipation questionnaire. - Santucci, N. R.; Hyman, P. E.; Rosenberg, A.; Rein, L. E.; Amado‐Feeley, A.; Stoops, E.; Herdes, R. E.; Karpinski, A.; Garguilo, D.; van Tilburg, M. A. L. (Neurogastroenterology & Motility, 2018)