intractable epilepsy prognosischildhood epilepsy prognosisinfant epilepsy prognosisepilepsy in dogs prognosislong term prognosis of epilepsyepilepsy prognosis adultschildhood absence epilepsy prognosisjuvenile absence epilepsy prognosistemporal lobe epilepsy prognosisfrontal lobe epilepsy prognosisprognosis of seizuresepileptic encephalopathy prognosis