Sorry I had a typo. It should have been:
29 $WADbSearch1->addComparison("specialtiesID","". $_GET["specialtiesID"]. ",","OR","Begins With",0);
30 $WADbSearch1->addComparison("specialtiesID",",". $_GET["specialtiesID"]. "","OR","Ends With",0);
31 $WADbSearch1->addComparison("specialtiesID",",". $_GET["specialtiesID"]. ",","OR","Includes",0);
32 $WADbSearch1->addComparisonFromEdit("specialtiesID","specialtiesID","OR","=",0);