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Apart from medicines like minoxidil
,zinc ,iron, I would also suggest you to take lasers for hair growth and meso injection which would help reducing you hair fall
But as you told you have gone bald over the crown,then the permanent solution would be only hair transplantation
. Its a very safe and effective procedure .
You can get details of hair transplantation from my website www.skinhairclinic.com.
Hope this answers your query,if you have any further questions ,kindly write back to us.