1 Division of Melanoma, Sarcomas and Rare Tumors, European Institute of Oncology, IRCCS, Milan, Italy. Electronic address: fabio.conforti@ieo.it.
2 Fondazione IRCCS Istituto Nazionale Dei Tumori, Milan, Italy.
3 Lille University and Centre Oscar Lambret, Lille, France.
4 Sarcoma Unit, Royal Marsden NHS Foundation Trust and Institute of Cancer Research, London, United Kingdom.
5 Instituto de Investigacion Sanitaria Fundacion Jimenez Diaz (IIS/FJD), Madrid, Spain; Medical Oncology Department, Hospital Fundación Jimenez Diaz University Hospital, Madrid, Spain; General de Villalba University Hospital, Madrid, 28400, Spain; Autonomous University of Madrid, Madrid, Spain.
6 Department of Statistics and Quantitative Methods, University of Milan-Bicocca, Milan, Italy.
7 Division of Melanoma, Sarcomas and Rare Tumors, European Institute of Oncology, IRCCS, Milan, Italy.
8 Division of Thoracic Oncology, European Institute of Oncology, Milan, Italy.
9 Candiolo Cancer Institute, FPO-IRCCS, Turin, Candiolo, 10060, Italy.
10 Candiolo Cancer Institute, FPO-IRCCS, Turin, Candiolo, 10060, Italy; Department of Oncology, University of Turin, Turin, Italy.
11 Medical Oncology Unit, Ospedale Humanitas Gradenigo, Turin, Italy.
12 Medical Oncology Department, University Campus Bio-Medico, 00128 Rome, Italy.
13 Department of Surgery, Istituto Clinico Humanitas, Rozzano, Italy.
14 Medical Oncology and Hematology Unit, Humanitas Clinical and Research Center, IRCCS, Rozzano, Italy.
15 "Sandro Pitigliani'' Medical Oncology Department, Hospital of Prato, Prato, Italy.
16 Centre Léon Bérard & University Cl. Bernard Lyon I, EURACAN, LYRICAN, Lyon, France.
17 Department of Medicine, Institut Bergonié, Bordeaux, Nouvelle-Aquitaine, France.
18 Department of Medical Oncology, Gustave Roussy, Villejuif, France.
19 Centre Leon Bérard, Hesper Lab, EA 7425, Université Claude Bernard Lyon Est, Lyon, France.
20 Oncology Department, University Hospital of Canary Islands, Canary Islands, Spain.
21 Pathology Department, University Hospital of Canary Islands, Canary Islands, Spain.
22 Oncology Department, University Hospital Miguel Servet, Zaragoza, Spain.
23 Instituto de Investigacion Sanitaria Fundacion Jimenez Diaz (IIS/FJD), Madrid, Spain; Autonomous University of Madrid, Madrid, Spain.