Bruce E. Dunn1
& Markus G. Grütter21
Bruce E. Dunn is in the Department of Pathology, Medical College of Wisconsin, and Pathology and Laboratory Medicine Service, Milwaukee Department of Veterans Affairs Medical Center, Milwaukee, Wisconsin 53295, USA
2
Markus G. Grütter is at Biochemisches Institut, Universität Zürich, Zürich, Switzerland.
Correspondence should be addressed to Bruce E. Dunn Bruce.Dunn@med.va.gov
