32
Participants
Start Date
February 29, 2016
Primary Completion Date
April 30, 2016
Study Completion Date
May 31, 2016
Caffeine
capsule: 300mg caffeine
Non caffeine
capsule: placebo (maize starch)
Instituto Brasiliense de Otorrinolaringologia (IBORL), Brasília
Instituto Brasiliense de Otorrinolaringologia
OTHER