RonPub UG (haftungsbeschränkt) http://www.ronpub.com Bo Ma Jinsong Wu Shuang Song William Liu Assuring Privacy-Preservation in Mining Medical Text Materials for COVID-19 Cases - A Natural Language Processing Perspective 6-13 2020 Open Journal of Internet Of Things (OJIOT) 6 6 https://www.ronpub.com/ojiot/OJIOT_2020v6i1n02_BoMa.html https://www.ronpub.com/OJIOT_2020v6i1n02_BoMa.pdf