Prospective studies / Humans / Female / Male / Risk factors / Creatine Kinase / Clinical Sciences / Adult / Public health systems and services research / Isoenzymes / Odds ratio / Risk Factors / Academic / Chest Pain / Emergency Department / Creatine Kinase / Clinical Sciences / Adult / Public health systems and services research / Isoenzymes / Odds ratio / Risk Factors / Academic / Chest Pain / Emergency Department