Effect of faecal calprotectin testing on referrals for children with chronic gastrointestinal symptoms in primary care: study protocol for a cluster randomised controlled trial.
Sophie Martine AnsemsMarjolein BergerPatrick van RheenenKarin VermeulenGina BeugelMaria CouwenbergGea A HoltmanPublished in: BMJ open (2021)
The Netherlands Trial Register: NL7690 (Pre-results).