Growing the penis

No.13437237 ViewReplyOriginalReport
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3214853/

>Patients with an average age of 19 years old with hypogonadism and micropenis
>Recieved hCG (human chorionic gonadotropin)
>Their penises grew nearly 50% in length

How could we make adults without micropenis respond the same way to hCG?
Discuss.