%0 Journal Article %T The Most Influential Scientists in the Development of Medical Informatics (20): Robert S. Ledley (1926-2012) %J Archive of "Acta Informatica Medica". %D 2018 %R 10.5455/aim.2018.26.71-72 %X Robert Steven Ledley (1926-2012) is one of the most influential Medical informatics scientists in the history of development of Medical informatics (1-3). Robert S. Ledley and his colleague Lee B. Lusted (1922-1994) wrote a seminal 1959 paper in Science that many people cite as the publication that launched the informatics field (Reasoning Foundations of Clinical Diagnosis) (4) %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5869276/