Saint John of God

Microbiology (from Ancient Greek μῑκρος (mīkros) 'small' βίος (bíos) 'life' and -λογία (-logía) 'study of') is the scientific study of microorganisms, those being of unicellular (single-celled), multicellular (consisting of complex cells),

Epidemiology is the study of how often diseases occur in different groups of people

Epidemiology is the study of how often diseases occur in different groups of people

How to manage pain