1. AIDS Reference Laboratory, National AIDS Control Program, Kinshasa,
Democratic Republic of Congo and GTZ, Kinshasa, Democratic Republic of Congo
2. AIDS Reference Laboratory, National AIDS Control Program, Kinshasa,
Democratic Republic of Congo
3. AIDS Reference Laboratory, National AIDS Control Program, Kinshasa,
Democratic Republic of Congo and Institute of Tropical Medicine, Antwerp,
Belgium
4. Institute of Tropical Medicine, Antwerp, Belgium