How to quantify your donor area hair supply?

Here is a picture of the donor area of a man who asked me: How much donor hair do I have? He asks: You have talked about the Donor Bank in your writings, so I would like to know how many grafts are in my Donor Bank and what will be my lifetime supply of grafts for hair transplants in case I should become very bald? First let’s see where the permanent zone of hair can be found. It is called the...

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