I den første undersøgelse blev type A resistente patienter (A- ikke responsive) randomiseret til at modtage placebo eller 10. 000 E NeuroBloc, og i den anden blev type A toxin responsive patienter (A- responsive) randomiseret til at modtage placebo, 5000 E eller 10. 000 E toxin.
In the first study, type A resistant patients (A-non responders) were randomised to receive placebo or 10,000 U of NeuroBloc and in the second, type A toxin responsive patients (A-responders) were randomised to receive placebo, 5000 U or 10,000 U of toxin.