[1] Vrije Univ Brussel, UZ Brussel, Oncol Ctr, Dept Med Oncol, Brussels, Belgium
[2] Vrije Univ Brussel, UZ Brussel, Dept Geriatr Med, Brussels, Belgium
[3] Univ Rochester, Med Ctr, Dept Med, Rochester, NY 14627 USA
[4] Jena Univ Hosp, Dept Internal Med 2, Jena, Germany
[5] Ist Oncol Veneto IOV IRCCS, Dept Med Oncol Unit 1, Padua, Italy
[6] Univ Cattolica Sacro Cuore, Dept Geriatr Med, Rome, Italy
[7] Oslo Univ Hosp, Dept Geriatr Med, Oslo, Norway
[8] Ohio State Univ, Ctr Comprehens Canc, Coll Nursing, Columbus, OH 43210 USA
[9] Katholieke Univ Leuven, Univ Hosp Leuven, Dept Gen Med Oncol, Leuven, Belgium
[10] Border Med Oncol, Wodonga, Australia
[11] Duke Univ, Med Ctr, Dept Med, Div Med Oncol, Durham, NC 27706 USA
[12] Natl Canc Ctr Singapore, Dept Med Oncol, Singapore, Singapore
[13] S Paolo Hosp, Div Med Oncol, Milan, Italy
[14] Ctr Leon Berard, Dept Med Oncol, F-69373 Lyon, France
[15] City Hope Comprehens Canc Ctr, Dept Med Oncol, Duarte, CA USA
[16] Katholieke Univ Leuven, Univ Hosp Leuven, Dept Gen Med Oncol & Geriatr Med, Leuven, Belgium
[17] Univ Liverpool, Dept Surg, St Helens Teaching Hosp, Liverpool L69 3BX, Merseyside, England
[18] Univ S Florida, H Lee Moffitt Canc Ctr, Tampa, FL 33682 USA