RETRACTED: Urinary sodium or potassium excretion and blood pressure in adults of Shandong province, China: preliminary results of the SMASH project

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).This article has been retracted at the request of the corresponding author, Dr. Xu Aiqiong, this article has been retracted. Due to an analytical oversight, body mass index was not analyzed in the multiple linear regression model.