1. Laboratoire de Virologie Médicale Moléculaire, RHAP-CNRS, Faculté de Médecine, 38043 Grenoble, France1;
2. Genelabs Diagnostics S.A., Geneva, Switzerland2; and
3. Genelabs Diagnostics Pte. Ltd.,3 and
4. Bioprocessing Technology Center, National University of Singapore,4 Singapore, Republic of Singapore