Fig. 1From: Circulating magnesium levels and incidence of coronary heart diseases, hypertension, and type 2 diabetes mellitus: a meta-analysis of prospective cohort studiesStudy selection process. Articles were identified by searches of PubMed (http://www.ncbi.nlm.nih.gov/pubmed), EmBase (http://www.elsevier.com/online-tools/embase), SCOPUS (https://www.scopus.com/) and Google Scholar (http://scholar.google.com)Back to article page