I've frequently written about bogus stem cell clinics that use hard sell techniques to sell unproven and expensive "stem cell treatments" to desperate patients. For instance, I deconstructed the story claiming that hockey great Gordie Howe improved so markedly after a severe stroke, thanks to stem cells offered to him for free (because of his celebrity) by a dubious stem cell company (Stemedica) through its Mexican partner (Clínica Santa Clarita). The whole incident basically opened my eyes to just how unethical the for-profit stem cell clinic industry is, as clinics use hard sell techniques…