question: Regime for Human Diploid Cell Vaccine for pre-exposure rabies vaccination is:
opa: 0,7,28 then booster dose 90 days
opb: 0,7,28 then booster dose 2 years
opc: 0,7,28 then booster dose 1 year
opd: 0, 14, 28 then booster dose 90 days