van Summeren, J. J. G. T., Holtman, G. A., Lisman- van Leeuwen, Y., Louer, L. E. A. M., van Ulsen-Rust, A. H. C., Vermeulen, K. M., . . . Berger, M. Y. (2018). Physiotherapy plus conventional treatment versus conventional treatment only in the treatment of functional constipation in children: Design of a randomized controlled trial and cost-effectiveness study in primary care. BMC Pediatr.

van Summeren, Jojanneke J. G. T., Gea A. Holtman, Yvonne Lisman- van Leeuwen, Lisa E. A. M. Louer, Alice H. C. van Ulsen-Rust, Karin M. Vermeulen, Boudewijn J. Kollen, Janny H. Dekker, and Marjolein Y. Berger. "Physiotherapy Plus Conventional Treatment Versus Conventional Treatment Only in the Treatment of Functional Constipation in Children: Design of a Randomized Controlled Trial and Cost-effectiveness Study in Primary Care." BMC Pediatr 2018.

van Summeren, Jojanneke J. G. T., et al. "Physiotherapy Plus Conventional Treatment Versus Conventional Treatment Only in the Treatment of Functional Constipation in Children: Design of a Randomized Controlled Trial and Cost-effectiveness Study in Primary Care." BMC Pediatr 2018.