Robredo backs doctors' plea to test Sinovac before giving to health workers<br/><a href="http://cnnphilippines.com/news/2021/2/28/Robredo-HTAC-Sinovac-recommendation-before-vaccination-health-workers.html?%3F%3F%3F=" rel="noreferrer noopener" target="_blank">cnnphilippines.com</a>