Sermswan, Anawat Methyldopa supplement for resistant essential hypertension: a prospective randomized placebo control crossover study. [electronic resource] - Journal of the Medical Association of Thailand = Chotmaihet thangphaet Dec 2003 - 1156-61 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0125-2208 Subjects--Topical Terms: AdultAntihypertensive Agents--administration & dosageCross-Over StudiesDouble-Blind MethodDrug Therapy, CombinationHumansHypertension--drug therapyMethyldopa--administration & dosageProspective Studies