| http://www.w3.org/ns/prov#value | - The centres were extracted from a database of 319 oncological centres reported in the census of the Italian Association Medical Oncology (AIOM) [17] and stratified by geographical area (Northern, Central, Southern Italy, including Sicily and Sardinia) and kind of institution (public hospital, university hospital, research institute, private hospital, other), since these factors were considered to
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