when it comes to 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. and the study of the safety and efficacy of ampligen in chronic fatigue syndrome what is the medical trial design?
(AND medicine.medical_trial_design (AND (JOIN medicine.medical_trial_design.trials m.03zbbyd) (JOIN medicine.medical_trial_design.trials m.04d2sb_)))