Chan Tak Kwong, Lee Cassandra Yuen-Yan, Yau Shing Kin, Tipoe George Lim
Department of Anatomy, University of Hong Kong, Hong Kong.
Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong.
Br J Gen Pract. 2014 Jun;64(623):e381-3. doi: 10.3399/bjgp14X680281.