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A medical staff member displays acupuncture needles used in acupuncture treatment during a seminar to commemorate Dr. Dwarkanath Kotnis in Panipat of north Indian state of Haryana, Oct. 10, 2018. (Xinhua/Zhang Naijie)

A medical staff member displays acupuncture needles used in acupuncture treatment during a seminar to commemorate Dr. Dwarkanath Kotnis in Panipat of north Indian state of Haryana, Oct. 10, 2018. (Xinhua/Zhang Naijie)