60 patients were divided into 2 groups: the study group was administered electro-acupuncture combined with paraffin, and the control group was administered electro-acupuncture only.
60 bệnh nhân chia thành 2 nhóm: nhóm nghiên cứu dùng điện châm kết hợp đắp paraffin, nhóm chứng dùng điện châm đơn thuần.