Table 1.

Description of subject groups.

	Non-chagasic donors (n = 24)	Chagasic patients (n = 22)
Age (years old)
Range	25–60	25–48
Median	30	32
Gender
Female	n = 16	n = 17
Male	n = 8	n = 5
Clinical evaluation
Electrocardiographic changes	NE	n = 1a
Echocardiographic changes	NE	n = 1b
Chest X-rays abnormalities	NE	n = 0

^aComplete right-bundle branch block and left anterior hemiblock.

^bLeft atrial enlargement.

NE, not evaluated.