1. Yorkville Plastic Surgery Centre, Toronto, Canada.
2. Azara, Tunbridge Wells, United Kingdom.
3. New England Surgical Center, Facial Plastic Surgery, The Retreat at Split Rock, Wilton, Connecticut, USA.
4. Department of Surgery, Head and Neck Aesthetic Surgery, Section of Otolaryngology, Yale School of Medicine,New Haven, Connecticut, USA
5. Università Vita-Salute San Raffaele, Milan, Italy.
6. Nayak Plastic Surgery, St. Louis, Missouri, USA.
7. Beverly Hills Center for Facial Plastic Surgery, Beverly Hills, California, USA.