Additional file 1: of Crossbow needle therapy of the Miao ethnic minority group for knee osteoarthritis: study protocol for a randomized controlled trial Jing Fu Hong-cai Shang Li-ying Wang Chen Zhao Jin Cui Yan-ping Wang 10.6084/m9.figshare.6695138.v1 https://springernature.figshare.com/articles/journal_contribution/Additional_file_1_of_Crossbow_needle_therapy_of_the_Miao_ethnic_minority_group_for_knee_osteoarthritis_study_protocol_for_a_randomized_controlled_trial/6695138 SPIRIT 2013 checklist: recommended items to address in a clinical trial protocol and related documents. (DOC 119 kb) 2018-06-27 05:00:00 KOA Crossbow needle therapy Acupuncture Randomized controlled trial