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Pöllänen P, Nikkanen V, Huhtaniemi I. Combination of subcutaneous levonorgestrel implants and transdermal dihydrotestosterone gel for male hormonal contraception. Int J Androl. 2001 Dec;24(6):369–80. doi: 10.1046/j.1365-2605.2001.00319.x. PMID: 11737418. |