After @ weeks of placebo run-in period , @ patients at @ centers with diastolic blood pressure ( DBP ) between @ to @ mm Hg ( @ mm Hg = @ kPa ) while systolic blood pressure ( SBP ) below @ mm Hg were randomized to receive aranidipine @-@ mg/d ( n = @ ) or retard-released felodipine @-@ mg/d ( n = @ ) for @ weeks .