The Clinical assessment of ACS page has been updated with revised information regarding LRs for ACS from the following article.
Fanaroff, AC, Rymer, JA, Goldstein, SA, et al. Does This Patient With Chest Pain Have Acute Coronary Syndrome?: The Rational Clinical Examination Systematic Review. JAMA 2015;314(18):1955-65. http://www.ncbi.nlm.nih.gov/pubmed/26547467.