Table 1. Distribution of the study population according to place of origin.
Continent or subcontinent	n (%)
North America	34 (4.5)
Central America	4 (0.6)
South America	615 (82.4)
Asia	10 (1.3)
Australia	4 (0.6)
Europe	63 (8.4)
Antilles	16 (2.2)