To undertake the BFB, we used a special ~alloon
device developed by the Pediatric Surgery Manometry
.Laboratory of UNIFESP-EPM.7 After daily training at
home, patients were evaluated every 3 months in this
Iaboratory in order to control functionaI and clinicaI
deveIopment. The first and Iast manometric controI
readings are shown in Table 3