At the hearing, the Disciplinary Committee determines the procedure to be followed and does not need to apply the rules of evidence. The Disciplinary Committee may take evidence on oath or affirmation. The complainant or representative, may request the Disciplinary Committee to summon a witness to give evidence or produce any document or article relating to any matter in issue. Any person who, without lawful excuse, refuses or fails    - to appear in obedience to the summons; or   - to be sworn or to make an affirmation, to give evidence relating to any matter in issue, or to produce any document or article specified in the summons, at the hearing, shall be guilty of an offence and shall be liable on conviction to a fine not exceeding S$2000, or to imprisonment for a term not exceeding 3 months or both.