Table 1. General characteristics of the subjects according to treatment period.

Parameters	4 weeks	8 weeks	12 weeks
No. (%) of subjects	36 (35)	43 (42)	23 (23)
Sex (M/F)	23/13	27/16	8/15
Age (yr)*	46.53 ± 10.05	47.51 ± 8.88	45.05 ± 15.40

^*There was no statistical difference in age among groups.

No., number; M, male; F, female.