Part,  Chapter, Paragraph

1  III,    10.  1    | populations who may live in more polluted environments are exposed
2  III,    10.  4.  1|          Children who grow up in polluted areas, or whose parents
3  III,    10.  4.  1|         whose parents grew up in polluted areas, are more likely to
4   IV,    13.  2.  3| populations who may live in more polluted environments are exposed