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Original Investigation |  FREE
Konrad Bork, MD; Jochen Hardt, PhD; Karl-Heinz Schicketanz, MD; et al.
Arch Intern Med. 2003;163(10):1229-1235. doi:10.1001/archinte.163.10.1229.

Clinical Observation | 
Derek J. Stocker, MD; William F. Kelly, MD; Thomas M. Fitzpatrick, MD; et al.
Arch Intern Med. 2002;162(17):2007-2009. doi:10.1001/archinte.162.17.2007.

Original Investigation |  FREE
Konrad Bork, MD; Sven-Erik Barnstedt, MD
Arch Intern Med. 2001;161(5):714-718. doi:10.1001/archinte.161.5.714.

Clinical Observation | 
Jon Older, DO; Penny Older, DO; Joel Colker, MD; et al.
Arch Intern Med. 1999;159(8):879-880. doi:10.1001/archinte.159.8.879.

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