Cost analysis
The cost analysis exists of two main parts. First, volumes of care will be measured prospectively using medical records, resource uses such as visits to the outpatient clinic, medication, hospital (re)admissions and surgical interventions (including intraoperative materials, disposables and operation time). Per arm (Quilt vs drain) full cost-prices will be determined using activity based costing. The second part of the cost analysis consists of determining the cost prices for each volume of consumption in order to use these for multiplying the volumes registered for each participating patient. The Dutch guidelines for cost analyses will be used [Economic analysis will be performed by a specialized statistician.