Double-blind trial of four hypotensive drugs (methyldopa and three sympatholytic agents).
D000328:Adult; D000368:Aged; D000959:Antihypertensive Agents / Q000009:adverse effects / Q000627:therapeutic use; D005260:Female; D006145:Guanethidine / Q000627:therapeutic use*; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D008297:Male; D008750:Methyldopa / Q000627:therapeutic use*; D008875:Middle Aged
D000959:Antihypertensive Agents; D008750:Methyldopa; D006145:Guanethidine