I. Introduction
Chemotherapy is a type of cancer treatment that uses one or more anti-cancer drugs as part of a standardized chemotherapy regimen. Chemotherapy may be given with a curative intent, or it may aim to prolong life or to reduce symptoms (palliative chemotherapy). A regimen is a systematic plan of treatment administration designed to improve the health of the patient. The regimens recommended by the national guidelines are called protocols. These protocols are evaluated through clinical trials, but also a posteriori using historical patient data.