Any document purporting to be—

(a) a certificate under the hand of a registered medical practitioner, or the Chemical Examiner or Assistant Chemical Examiner to Government, under section 129A or of an officer appointed under sub-section (1) of that section, or

(b) a report under the hand of any registered medical practitioner, in any hospital or dispensary maintained by the State Government or a local authority or any other registered medical practitioner authorised by the State Government in this behalf in respect of any person, examined by him or upon any matter or thing duly submitted to him for examination or analysis and report,