<qa>  What is the first step of the study?This study will be conducted in two steps. The first is the Italian translation and cross cultural adaptation of the original US NCIs version of the PRO-CTCAE questionnaire. The questionnaire will be translated and administered to a sample of 96 Italian patients. After protocol amendment in November 2016, the second step was modified and consists of test-retest reliability assessment of the Italian language version of the PRO-CTCAE questionnaire that was developed in the first step, with a minimum of 59 Italian speaking patients to be enrolled. A validation study is planned and will be the subject of a separate protocol. 