title: Mild hypertension: to treat or not to treat. Part IV. Clinical trials in progress. Design and management of large multicenter clinical trials.
mesh_terms: D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D009934:Organization and Administration; D012106:Research; D012107:Research Design; D014481:United States; D014493:United States Department of Veterans Affairs