Has it done properly? The Difference between Before and After Social Distancing’s Policy Implementation in Controlling Covid-19 in Jakarta, IndonesiaRony Darmawansyah Alnur, Meita Veruswati and Al AsyaryE3S Web Conf., 202 (2020) 12031DOI: https://doi.org/10.1051/e3sconf/202020212031