The geographical distribution of the donors’ residences covered
an area approximately within a 30 km radius from Tel Aviv (displayed
in Fig. 1). This represents the greater Tel Aviv metropolitan
area with the highest population density in the country. It was
important to sample the population not residing in areas where
emissions of POPs are known or suspected to result in elevated
levels of POPs. All participants were asked if they lived in highly
polluted areas, such as in the vicinity of incinerators, pulp and