1. CHUPorto, Department of Otolaryngology - Head and Neck Surgery, Instituto de Ciências Biomédicas Abel Salazar—Universidade do Porto, Hospital da Luz—Arrábida, Matosinhos, Portugal.
2. Rush University Medical School, Professor and Director of Resident Research, University of Illinois at Chicago, Department of Otolaryngology - Head and Neck Surgery, Chicago, Illinois, USA.
3. Toriumi Facial Plastics, Chicago, Illinois, USA.