- Correspondence to Dr Ying-Sheng Shen, Department of Emergency Medicine, Cathay General Hospital, No. 280 Sec 4, Jen-Ai Rd, Taipei, Taiwan;
- Accepted 10 May 2010
- Published in print 1 July 2011.
- Published online 23 June 2011.
- Published first 21 July 2010.
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