April 07, 2021 The Court of Appeal noted that Ms Serene Tiong was driven by revenge and has a history of conflict with Dr Julian Ong. Shin Min Daily News and Drjulianong.sg SINGAPORE - A woman, deemed by the court to be on a "quest for revenge" against a doctor, had her appeal dismissed on Wednesday (April 7). Ms Serene Tiong, who was sued for defamation by Dr Julian Ong, had sought the court's permission to sue HC Surgical Specialists (HCSS) chief executive Heah Sieu Min on behalf of HCSS for alleged breach of director's duties relating to the company buying an additional 19 per cent stake in Dr Ong's firm.