Concordia Clinical Research, Cedar Knolls, New Jersey, United States
Loma Linda University, Loma Linda, California, United States
Spa Dental, Santo Domingo, Dominican Republic
Rutgers School of Dental Medicine, Newark, New Jersey, United States
Centro Comercial Plaza Trujillo, Trujillo Alto, Puerto Rico
Mahidol University, Ratchathewi, Bangkok, Thailand
Contract Dental Evaluations, Langhorne, Pennsylvania, United States
Ariminum Research & Dental Education Center, Rimini, Italy
Jacobsen Dental Clinic, San Francisco, California, United States