Ankle dorsiflexion assistance of patients with foot drop using a powered ankle-foot orthosis to improve the gait asymmetry.

"Declarations Competing interestsThe authors declare no competing interests. Ethics approval and consent to participateThe institutional review board of the Seoul National University Hospital approved all the experimental protocols (SNUH IRB No. 1506-141-683), and written consent and assent were obtained from each participant. Consent for publicationNot applicable. Competing interests The authors declare no competing interests."

"Funding This work was supported by the Bio & Medical Technology Development Program of the National Research Foundation (NRF) funded by the Korean government (MSIP) (No. NRF-2017M3A9E2063101). This research was also supported by the Technology Innovation Program (20007058, Development of safe and comfortable human augmentation hybrid robot suit) funded By the Ministry of Trade, Industry, and Energy (MOTIE, Korea)."