1. Lam Dong Medical College and Bio-Medical Research Center, Dalat city, Vietnam
2. Immuno-Allergology Division. Hershey Medical Center, Penn State Medical College, Pennsylvania, USA
3. Sleep Lab Unit, Outpatient Department, Pham Ngoc Thach Medical University
4. Stem Cell Center, Vietnam National Children's Hospital, Hanoi
5. Medical Education Center - University of Medicine and Pharmacy at Ho Chi Minh city, Ho Chi Minh city, Vietnam