1. University of Pittsburgh, Pittsburgh, Pennsylvania, USA
2. Statens Serum Institut, Copenhagen, Denmark
3. National Cheng Kung University Medical College, Tainan, Taiwan, Republic of China
4. Emory University, Atlanta, Georgia, USA
5. South African Institute of Medical Research, Johannesburg, South Africa
6. University Hospital, Antwerp, Belgium
7. Universidad de las Islas Baleares, Palma de Mallorca, SpainDeceased.