Part,  Chapter, Paragraph

1   II,     5.  5.  3|       absence of a recognized etiological or risk factor (idiopathic
2   II,     5.  5.  3|   risk, the prevalence of the etiological factors in the local environment,
3   II,     5.  5.  3| disorders are the most common etiological factors (14-21%) followed
4   II,     5.  5.  3|        Beghi, 2004). The main etiological factors are virtually the