. Author manuscript; available in PMC: 2021 May 24.
Published in final edited form as: IEEE Access. 2020 Jul 24;8:140445–140455. doi: 10.1109/access.2020.3011691
This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/
FIGURE 2.
A schematic of the study design.