Tarek Tawfik Amin

epidemiology risk clinical and academic research health education risk factors sources types medical education selecting a journal post publishing steps of publishing functions types of masking blindinng clincal trials phases quasi experimental types of clical traials designs advantages and disadvantages experimental context . language writing sceintiifc journal acrticle style bias confounding advantages and disadavantages primary and secodry data sources electronic and paper based prevalence barriers physical activity cancer prevention. screening carcinogenesis. gender cancer epidemiology burden community indicators health system contributing factors. diagnosis ebola infection control correlation linear pearson's indications proper methods to avoid plagiarism forms accuracy specificity predictive value sensitivity screening test public awareness adults learning breast cancer genetics epidemic case study investigations methods samples cancer prevention public health competency pbl sample size calculation medicine odds attributable risk relative risk ratio research methodology bias and causality medical research education learning teaching reliability validity inferential. spss basic descriptive statistics