Are they typically performed by medical doctors?
I guess some stuff - even eye dyeing - is done by tattoo artists and "botox technicians" or whatever, but it seems like splitting tongues and creating "horns" and stuff would need to be done by a doctor / plastic surgeon, no?
I mean, I guess it all could be done by "back room 'doctors' ", but that makes the "patient" even more of a moron, IMO.