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. 2012 Oct 31;2(6):e001391. doi: 10.1136/bmjopen-2012-001391

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Blood pressure readings at baseline and months 1, 3 and 6 postrecruitment among all intervention and control patients who had systolic hypertension at baseline (systolic blood pressure (SBP)>130 mm Hg if patients had chronic kidney disease (CKD) stages 3–4 or SBP>140 mm Hg if no CKD stages 3–5).