[1] Hosp Felicio Rocho, Belo Horizonte, MG, Brazil
[2] Hosp Moinhos de Vento, Porto Alegre, RS, Brazil
[3] Univ Sao Paulo, Sao Paulo, SP, Brazil
[4] Hosp Aristides Maltez, Salvador, BA, Brazil
[5] Hosp Benefiencia Portuguesa, Sao Paulo, SP, Brazil
[6] Hosp Real Portugues, Recife, PE, Brazil
[7] Inst Canc Sao Paulo, Sao Paulo, SP, Brazil
[8] Hosp Porto Dias, Belem, PA, Brazil
[9] Inst Nacl Canc, Rio De Janeiro, RJ, Brazil
[10] Hosp Albert Einstein, Sao Paulo, SP, Brazil
[11] Inst Canc Res, Sao Paulo, SP, Brazil
[12] Hosp Base Brasilia, Brasilia, DF, Brazil
[13] Hosp Moriah, Sao Paulo, SP, Brazil
[14] Inst Dor, Rio De Janeiro, RJ, Brazil
[15] Hosp Monte Klinikun, Fortaleza, CE, Brazil
[16] Univ Rio de Janeiro, Rio De Janeiro, RJ, Brazil
[17] Hosp Amer, Rio De Janeiro, RJ, Brazil
[18] Hosp Canc Barretos, Barretos, SP, Brazil
[19] Univ Sao Paulo, Ribeirao Preto, SP, Brazil
[20] AC Camargo, Sao Paulo, SP, Brazil
[21] Hosp Quinta Dor, Rio De Janeiro, RJ, Brazil
[22] Fac Med ABC, Sao Paulo, SP, Brazil