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Continuous dosing study: mean serum concentrations of total testosterone with TAK-683 dosing by treatment cohort on days 1–4, 13 and 14. TAK-683 dose (mg kg−1). 
, 0.01 mg kg–1. 
, 0.03 mg kg–1. 
, 0.10 mg kg–1. 
, 0.30 mg kg–1. 
, 2.00 mg kg–1
