1. Bacteriology Unit, Institute for Medical Research, Kuala Lumpur, Malaysia
2. Selayang Hospital, Selangor, Malaysia
3. Sultanah Aminah Hospital, Johor, Malaysia
4. Raja Perempuan Zainab II Hospital, Kelantan, Malaysia
5. Kuala Lumpur Hospital, Kuala Lumpur, Malaysia
6. Queen Elizabeth Hospital, Sabah, Malaysia
7. Penang Hospital, Penang, Malaysia