Medical Studies are the basic/applied research that is performed to expand knowledge in the field of medicine. Medical research, as it is called, can be divided into two general categories. The first is the evaluation of new treatments for both safety and efficiency in what are labeled “clinical trials”. It also includes all other research that contributes to the development of new treatments. If the goal of the latter is specifically to elaborate knowledge for the development of new therapeutic strategies, it is termed “pre-clinical”.