All superintendents, managers and other persons in charge of hospitals, maternity homes, homes for the aged and public and private institutions to which persons resort for medical care or to which persons are committed by process of law, shall obtain and record as to each inmate, at the time of his admittance, all personal information required in the certificates prescribed by the department. Each inmate shall supply such information at the time of admittance, but if the inmate is unable personally to supply the information a relative of the inmate or other person acquainted with the facts shall do so.