Drupal-Bibcite0<style face="normal" font="default" size="100%">Relationship of the dietary sodium substitution with low sodium and high potassium salt with the blood pressure among middle aged and elderly people: a randomized controlled study</style><style face="normal" font="default" size="100%">Relationship of the dietary sodium substitution with low sodium and high potassium salt with the blood pressure among middle aged and elderly people: a randomized controlled study</style>