Considering that in most developing countries there are still no comprehensive lists of addresses for a given geographical area, there has always been a problem in drawing samples from the community, ensuring randomisation ...

We studied the socioeconomic status of 206 stroke patients seen at Escola Paulista de Medicina - São Paulo in the period 1991-1992. We found that 25% of patients were less than 50 years old; men were married significantly ...

Background: In 2001 Argentina experienced the worst economic depression in the country’s history, yet few researchers have examined the nutritional status of Argentines vis-à-vis key socioeconomic indicators as the country ...