the a phase iii study to evaluate the safety and efficacy of ganciclovir (dihydroxypropoxymethyl guanine [dhpg]) treatment of symptomatic central nervous system (cns) congenital cytomegalovirus (cmv) infections. medical trials are under the authority of whom?
(AND medicine.medical_trial_health_authority (JOIN medicine.medical_trial_health_authority.medical_trials m.03zbbyd))