Cheng Wai Tsoi Frankie, Li Chi Kong, Leung Ting Fan, Li Albert Man-Chim, Hon Kam Lun Ellis, Ng Pak Cheung, Fok Tai Fai
Department of Pediatrics, 6/F, Clinical Sciences Building, Prince of Wales Hospital, Shatin, Hong Kong.
Clin Pediatr (Phila). 2004 Mar;43(2):193-6. doi: 10.1177/000992280404300211.