An Image-Based Mobile Health App for Postdrainage Monitoring: Usability Study

Chien-Hung Liao   ^{1 *} , MD, FACS, FICS ;   Yu-Tung Wu   ^{1 *} , MD ;   Chi-Tung Cheng   ¹ , MD ;   Chun-Hsiang Ooyang   ¹ , MD ;   Shih-Ching Kang   ¹ , MD ;   Chih-Yuan Fu   ¹ , MD ;   Yu-Pao Hsu   ¹ , MD ;   Chi-Hsun Hsieh   ¹ , MD, PhD ;   Chih-Chi Chen   ² , MD

¹ Department of Trauma and Emergency Surgery, Linkou Chang Gung Memorial Hospital, Chang Gang University, Taoyaun, Taiwan

² Department of Physical Medicine and Rehabilitation, Linkou Chang Gung Memorial Hospital, Chang Gang University, Taoyaun, Taiwan

*these authors contributed equally