Letters to the EditorUsing TikTok App for Therapy and Sharing Happiness in COVID-19 OutbreakSitumorang, Dominikus David Biondi SPd, MPd, MSi, CT, CPS, CBNLP Author Information Department of Guidance and Counseling, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia The author declares no conflict of interest. Addictive Disorders & Their Treatment: December 2021 - Volume 20 - Issue 4 - p 595-596 doi: 10.1097/ADT.0000000000000255 Buy Metrics Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.