Sixty of these patients, ASA I and II, of both genders, ages 18 to 65 years, were selected to participate in this randomized double-blind study. Mean age was 46.8 years.
Los individuos eran de ambos sexos, con un edad entre los 18 y los 65 años.
Os indivíduos eram de ambos os sexos, com idade entre 18 e 65 anos.