<qa>  What is the name of the list of patients with lupus and systemic sFirstly a list will be created of all patients with lupus and systemic sclerosis who are in follow-up at the reumatology department in UZ Leuven. Afterwards all patients who fulfill the inclusion criteria will be selected. The patients who are included will be informed by mail and they will be asked to participate. When they agree for participating then they will be asked to complete an informed consent form. 