“Gordis Epidemiology , 7th Edition (True PDF)” has been added to your cart. Continue shopping Remove item Thumbnail image Product Price Quantity Subtotal × An Introduction to Clinical Trials (Original PDF from Publisher) 30$ An Introduction to Clinical Trials (Original PDF from Publisher) quantity 30$ × Gordis Epidemiology , 7th Edition (True PDF) 46$ Gordis Epidemiology , 7th Edition (True PDF) quantity 46$ Coupon: Apply coupon Update cart Cart totals Subtotal 76$ Total 76$ Proceed to checkout