1. Instituto de Medicina Integral Prof Fernando Figueira - IMIP; Department of Anaesthesiology; Rua do Coelhos sem número Recife Brazil 50070-550
2. Universidade Federal de Pernambuco; Physical Therapy; Av Prof. Moraes Rego, 1235 Cidade Universitária - Depto Fisioterapia Recife Pernambuco Brazil 50670-901
3. Instituto de Medicina Integral Prof Fernando Figueira - IMIP; Department of Paediatric Surgery; Rua do Coelhos sem número Recife Brazil 50070-550
4. Instituto de Medicina Integral Prof Fernando Figueira - IMIP; Department of Research Direction; Coelhos Street, 300, Boa Vista Recife Pernambuco Brazil 50070-550
5. Boston Children’s Hospital; Department of Anesthesiology, Perioperative and Pain Medicine; 300 Longwood Avenue Boston Massachusetts USA 02115
6. Harvard Medical School; Department of Anaesthesia; Boston Massachusetts USA