APSTH2021 Abstract submission deadline has been extended. 12/25,2020 APSTH 2021 local organizing committee announced that APSTH 2021 will be held as a hybrid congress which combines a virtual meeting for overseas participants and an offline meeting for domestic participants. The APSTH 2021 Online will run according to its original program and schedule over a 3-day span. With the re-arrangement of the preparation according to the new format, the deadline for free papers were extended as below. Abstract Submission Deadline: by January 31, 2021 Acceptance Notification: by February 15, 2021 Presenting Author’s Registration Deadline: February 28, 2021 APSTH 2021 will present “Best Presentation Awards and Best Paper Awards” to aspiring scientists. The Scientific Committee will select awardees after reviewing abstracts. So, do not miss this opportunity and submit your free papers. Please note that only abstracts submitted through the online system will be accepted. Updated information will be posted on the APSTH2021 website http://www.apsth2021.org/main.html