Table 1.

Summary of clinical samples.

	Non-PD		PDa
Gender	Male	Female	Male	Female
Number	10	11	14	12
Age (years)	70 ± 3.2	71 ± 3.2	73 ± 2.1	73 ± 2.6
Disease duration (years)	NAb	NA	5.8 ± 0.60	4.8 ± 0.60

^aPatients' Parkinson's disease (PD)-related criteria such as Hoehn/Yahr or Unified Parkinson's Disease Rating Scale scores were unavailable.

^bNA: not applicable.