The study was conducted in Afyonkarahisar, a middle
Anatolian city, between November 2005 and February 2006. The
study planned as a cross-sectional research. The present study
was approved by the Afyon Kocatepe University, Faculty of
Medicine Clinical Research Ethics Committee and written,
informed consent was obtained from all participants. A total of
2035 people, from 75 different screening regions (18 urban, 57
villages) of our city were detected according to the population
records of the year 2000, which represent the population of the
area appropriately. A total of 7000 km of roadway was driven for
the research by a team of 15 physicians, 1 nurse and a driver.
The records of the regional health institutions were used in
order to determine the subjects.