I have 40 years of experience and specialize in the field of biostatistics with specific knowledge in the areas of clinical and observational study design and analysis, design and analysis of screening, diagnostic test evaluation and survival analysis, and other methods of statistical analysis. I have published on such topics as clinical trials, meta analysis, misclassification, and evaluation of screening and medical tests. I have testified on synergy patent issues, meta analysis of longitudinal data in studies in cardiovascular disease stents, survival analysis in patent suits and results of clinical trials.