West J Med. 2000 Feb;172(2):98-101. doi: 10.1136/ewjm.172.2.98.
The Western journal of medicine
J A Stern, A J Schaeffer
PMID: 18751239 PMCID: PMC1070766 DOI: 10.1136/ewjm.172.2.98
[No abstract available.]