Some participants may require visas in order to enter Brazil. Please consult with the Brazilian Embassy or Consulate nearest to you for specific details relating to visas. Participants requiring a formal letter of invitation, to enable them to make their arrangements, should contact the Secretariat. This invitation is prepared solely for the purpose of visa applications and is not a commitment on the part of the organizers to provide any financial support or confirmation of inclusion in the Scientific Programme. Please email your request with full name, postal address, passport number and your registration confirmation number.