Dept. of Epidemiology and Public Health, Bldg. B, University of Miami, Miller School of Medicine, 12500 S.W. 152nd Street, Miami, MI 33177, USA, Fax: +1 305 256 1306, Tel: +1 305 256 3474, Email: JBeier@med.miami.edu
K. Berzins
Dept. of Immunology, Stockholms Universitet, SE-106 91 Stockholm, Sweden, Fax: +46 8 157356, Tel: +46 8 164170, Email: klavs@imun.su.se