“…1 shows, the main functions of the system were designing clinical trials, defining users' roles, creating case report forms, auditing, documenting clinical data management process, reviewing participants' records, generating reports and statistics, locking databases, and backing to the profile. In addition, a clinical trial manger was able to define a clinical trial setting, design case report forms, annotate forms, create databases, validate data, manage data discrepancies, resolve data disputes, and maintain data security [32]. The purpose of this study was to evaluate the quality and usability of this system from the users' perspectives.…”