Edward Tyson
Edward Tyson (20 January 1651 – 1 August 1708) was a British scientist and physician, commonly regarded as the founder of modern comparative anatomy, which compares the anatomy between species.
Guillaume de Baillou
Guillaume de Baillou is considered to be the first epidemiologist since Hippocrates, and is credited as the founder of modern epidemiology. He did extensive studies of epidemics that plagued Paris, and is additionally credited with providing the first clinical description of pertussis (whooping cough) in 1578. He also provided the first modern descriptions of rheumatism and arthritis, of which he defined in the treatise "Liber de Rheumatismo et Pleuritide dorsali".