Documents Savoirs Unilateral versus bilateral thyroarytenoid Botulinum toxin injections in adductor spasmodic dysphonia: a prospective study Upile Tahwinder, Elmiyeh Behrad, Jerjes Waseem, Prasad Vyas, Kafas Panagiotis, Abiola Jesuloba, Youl Bryan, Epstein Ruth, Hopper Colin, Rubin John, Sudhoff Holger