title: Reply to letter to the editor by Nishii.
authors: Hirofumi
authors: H
authors: Jigami
authors: Naoto
authors: N
authors: Endo
mesh_terms: D005081:Exercise Therapy; D005260:Female; D006801:Humans; D015207:Osteoarthritis, Hip / Q000534:rehabilitation*; D011788:Quality of Life