Here is a study abstact I stumbled across. Many of the studies performed outside the US appear to be cost driven, but the findings are interesting.
<a target=_blank class=ftalternatingbarlinklarge href="http://www.inahta.org/Publications/Briefs-Checklist-Impact/20032/A-Comparative-Study-of-Hypertonic-Saline-Daily-and-Alternate-day-rhDNase-in-Children-with-Cystic-Fibrosis/">http://www.inahta.org/Publicat...-with-Cystic-Fibrosis/</a>
<a target=_blank class=ftalternatingbarlinklarge href="http://www.inahta.org/Publications/Briefs-Checklist-Impact/20032/A-Comparative-Study-of-Hypertonic-Saline-Daily-and-Alternate-day-rhDNase-in-Children-with-Cystic-Fibrosis/">http://www.inahta.org/Publicat...-with-Cystic-Fibrosis/</a>