I just read the full-text of this article:
Shwachman-Diamond syndrome in a child presenting with cystic fibrosis-type symptoms and a false-positive sweat test.
J R Soc Med. 2008 Jul;101 Suppl 1:39-43
Very interesteing. No abstract is available.
For information on Shwachman-Diamond Syndrome check out Shwachman-Diamond America