Table 1. Demographics of the three cohorts.

Cohort	Group	Sex	Mean age (years)
Primary Cohort	AD	7m/8f	72.54
	NC	6m/9f	76.63
Independent Cohort I	AD	4m/3f	68.87
	NC	3m/4f	74.03
Independent Cohort II	AD	4m/4f	66.03
	NC	4m/4f	65.80