“…Among them, there were 5 studies each for low back pain [ 25 – 27 , 31 , 33 ] and cervicalgia [ 22 – 24 , 28 , 29 ]; two studies were for knee osteoarthritis [ 30 , 34 ] and shoulder pain [ 21 , 35 ] each; and one was for ankle sprain [ 32 ]. In the category nervous system disease/disorder [ 12 – 17 ] (VI, n = 6), three studies of Bell's palsy [ 13 , 14 , 17 ], two of headache [ 12 , 15 ], and one for carpal tunnel syndrome [ 16 ] and leg spasticity of stroke patients [ 18 ] were found. The other studies could be classified into the endocrine, nutritional, and metabolic diseases [ 9 – 11 ] (IV, n = 3), diseases of the digestive system [ 19 , 20 ] (XI, n = 2), diseases of the circulatory system [ 18 ] (IX, n = 1), diseases of the genitourinary system [ 36 ] (XIV, n = 1), and pregnancy, childbirth, and the puerperium [ 37 ] (XV, n = 1).…”