https://www.orpha.net/consor/cgi-bin/Disease_Search.php?lng=IT&data_id=3728&Disease_Disease_Search_diseaseGroup=PSEUDOXANTOMA&Disease_Disease_Search_diseaseType=Pat&Malattia(e)/%20gruppo%20di%20malattie=Pseudoxantoma-elastico&title=Pseudoxantoma%20elastico&search=Disease_Search_Simple