Klein Sabra L
Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD 21205, USA.
Behav Processes. 2005 Mar 31;68(3):219-21. doi: 10.1016/j.beproc.2004.07.009. Epub 2005 Jan 4.