Dr Abisha T

phase 4 anti-epileptics ilae classification guidelines pharmacotherapeutics epilepsy seeding trial drug utilisation studies psur pharmacovigilance equivalence trial superiority trial post marketing study designs clinical trial post marketing surveillance nda confirmatory trial first in human trial explanatory trial traditional 3+3 design up and down design pad mrsd phase 3 phase 2 phase 0 phase 1 phases clinical trials