Continuous monitoring of enrolment and completeness of data will be performed by ICON as contract research organization (CRO). Source data verification (SDV) will be performed in 10% of subjects by the CRO. The quality of data collection will be further enhanced by implementing automated data entry checks for impossible/implausible values and implementing data checks for consistency between variables. A task force of study personnel will evaluate the completeness, consistency and validity of submitted data and function as support desk for participating sites.