URLDate
Verified		Extra Software
Requirements
(if any)		Access
Conditions		Notes
http://dx.doi.org/10.1046/j.0028-646x.2001.00242.xDOI Link
http://www.jstor.org/stable/view/135358007/16/2014Item is within a limited-access website
http://www.jstor.org/stable/pdfplus/1353580.pdf07/16/2014PDF ReaderItem is within a limited-access website