Roberto Bonanzinga is an Osteopath from Parma, Italy. He has been teaching Visceral Manipulation and Neural Manipulation seminars with the Barral Institute since 2003. He teaches VM1, VM2, VM3, VM4, NM1, NM2 and NM3. In July, 2008 he earned the Barral Institute Diplomate Certification. This is the highest level of Certification given by Jean Pierre Barral, Alain Croibier and the Barral Institute.