Hi.<br/>I guess by " The onset of <u>less serious symptoms</u> tends to precede the onset of moderate symptoms, which precedes the onset of serious symptoms."<br/>(from:<a href="http://focus.psychiatryonline.org/article.aspx?Volume=2&page=558&journalID=21"><a href='http://focus.psychiatryonline.org/article.aspx?Volume=2&page=558&journalID=21' target='_blank' rel='nofollow'>http://focus.psychiatryonline.org/article.aspx?Volume=2&page=558&journalID=21</a> </a> )<br/><br/>they mean the least serious symtoms, am I right?