A patient is on the sick leave for 4 months continuously from the date of injury. The treatment is going to last for 1-2 months more. Who has the right to extend the duration of medical certificate for this patient?

Answer options

1. Medical advisory commission after inpatient treatment
2. District doctor by agreement with a department chief
3. Medical advisory commission after medico-social expert commission examination
4. Medical superintendent
5. Medico-social expert commission