B) Profile of patients with cervical dystonia
Patient no.	Sex	Symptoms	Age (years)	Age of onset (years)	Tsui score
1	Male	Lt rotation, posterior flexion	37	29	8
2	Female	Rt rotation, anterior flexion	40	30	9
3	Male	Lt rotation, anterior flexion	34	30	8
4	Female	Rt rotaion, anterior flexion	45	36	8
5	Male	Lt flexion, shoulder elevation	42	37	7
6	Male	Rt flexion, shoulder elevation	44	42	7
7	Male	Lt rotation	56	53	6
8	Male	Rt rotation, anterior flexion	65	55	8
9	Male	Rt rotaion, anterior flexion	62	64	8
10	Female	Lt rotation	73	77	6

SD: standard deviation, Lt: left, Rt: right