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International germ cell cancer collaborative group risk classification for advanced germ cell tumors (GCTs)
PFS, progression-free survival; AFP, alfa-fetoprotein; hCG, human chorionic gonadotropin; LDH, lactate dehydrogenase; ULN, upper limit of normal (modified from J Clin Oncol 1997;15:594-603, with permission of the American Society of Clinical Oncology [20]).
