Doctor and doctor, that's more valuable.

Doctor, sir.

Dr. La only has a certificate obtained by passing the industry entrance examination, that is, an employment certificate. It belongs to the assistant doctor. Dr. mr is a regular doctor with professional knowledge of imaging.

Dr. La is an employment certificate and a certificate obtained through the industry entrance examination. The examination of doctor's qualification certificate is an examination to evaluate whether the applicant for doctor's qualification has the necessary professional knowledge and skills to engage in doctor's work.