Fig. 4
From: Accessing routinely collected health data to improve clinical trials: recent experience of access
Flow diagram of the Add-Aspirin National Cancer Registration and Analysis Service (NCRAS) application. (Please note that timeline is not proportional) REC approval for Add-Aspirin March 2014. Recruitment opened in October 2015 and is ongoing. CTU, clinical trials unit; DSA, data sharing agreement; NCIN, National Cancer Intelligence Network; ODR, Office for Data Release; REC, Research Ethics Committee