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Gary Herskovits, DDS, Brooklyn, NY

 

Dr. med. dent. Teresa Meyer, Zürich, Switzerland

 

Colegio Odontológico del Perú

 

Đông Y Thanh Tuẫn

 

Dr. Maurício Duarte da Conceição, São Paulo and Campinas, Brazil

 

Dr. Bernward Pupke, Hamburg, Germany