title: The Reply.
authors.affiliation: Division of Cardiology, Department of Medicine and Geriatrics, United Christian Hospital, Kwun Tong, Kowloon, Hong Kong, China.
authors.forename: Shing
authors.initials: S
authors.lastname: Ching
authors.affiliation: Department of Accident and Emergency, United Christian Hospital, Hong Kong, China.
authors.forename: Soo Moi
authors.initials: SM
authors.lastname: Ting