1. Measurement in medicine: The analysis of method comparison studies;Altman;The Statistician,1983
2. Points of significance: Association, correlation and causation;Altman;Nature Methods,2015
3. Biostatistics104: Correlational analysis;Chan;Singapore Medical Journal,2003
4. Concordance versus correlation;Lowenstein;Annals of Emergency Medicine,1993
5. Statistics corner: A guide to appropriate use of correlation coefficient in medical research;Mukaka;Malawi Medical Journal,2012