Quatela Facial Plastic Surgery Center, Rochester, New York, USA: Haziran – Temmuz 2007

Perkins Facial Plastic Surgery Clinic, Indianapolis, Indiana, USA: Aralık 2004

Oregon Health Sciences University, Otorhinolaryngology Department, Division of Facial Plastic Surgery, Portland, Oregon, USA: Ağustos – Eylül 2001.

Larrabee Facial Plastic Surgery Center, Seattle, Washington, USA:  Ağustos – Eylül 2000

Mayo Clinic, Department of Otorhinolaryngology, Rhinology and Facial Plastic Surgery Divisions, Rochester, Minnesota, USA: Eylül – Aralık 1998