1. Department of Speech Pathology and Audiology, Western Michigan University, Kalamazoo, Michigan
2. Department of Preventive and Community Dentistry, The University of Iowa.
3. Department of Otolaryngology–Head and Neck Surgery, Department of Surgery–Division of Plastic Surgery, The University of Iowa Hospitals and Clinics, Iowa City, Iowa.
4. Department of Speech Pathology, College of Allied Medical Professions, University of the Philippines, Manila.
5. University of the Philippines Manila.