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(a) Median serum levels of bHCG in categories of primary tumour size in GCT patients with clinical stage 1 (CS1). ULN: upper limit of norm (for explanations of box plot details see legend to Figure 1). (b) Median serum levels of AFP in categories of primary tumour size in nonseminoma patients with clinical stage 1 (CS1). ULN: upper limit of norm.
