Efficacy and Tolerability of the Association of Captopril + Hydrochlorothiazide in the Treatment of Mild-to-Moderate Hypertension. A Multicenter Trial,EFICACIA E TOLERABILIDADE DA ASSOCIACAO CAPTOPRIL + HIDROCLOROTIAZIDA NO TRATAMENTO DA HIPERTENSAO ARTERIAL LEVE a MODERADA. ESTUDO MULTICENTRICO