Hermida, Ramón C Reduction of morning blood pressure surge after treatment with nifedipine GITS at bedtime, but not upon awakening, in essential hypertension. [electronic resource] - Blood pressure monitoring Aug 2009 - 152-9 p. digital Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 1473-5725 Standard No.: 10.1097/MBP.0b013e32832e0d80 doi Subjects--Topical Terms: Antihypertensive Agents--therapeutic useBlood Pressure--drug effectsBlood Pressure Monitoring, AmbulatoryDrug-Related Side Effects and Adverse ReactionsFemaleHumansHypertension--drug therapyMaleMiddle AgedNifedipine--therapeutic useSleep--drug effectsTime FactorsWakefulness--drug effects