Data collection, preservation, and monitoring Data will be collected on paper case-report forms and summarized in a table. The written records will be transferred to an electronic format using a double-data entry strategy. The trial process will be monitored by professional clinical research associates will full access to all essential documents to ensure patient safety and complete clinical data, including compliance with the informed-consent procedure, and evaluation of primary endpoints and compliance. In addition to regular site visits, the clinical research associates will also communicate with the trial center via e-mail and phone. If any patient(s) withdraws from the trial, an intention-to-treat analysis of related records should be performed, otherwise the patient's records will be deleted. The reasons for patient withdrawal should be recorded in the medical records.