?url_ver=Z39.88-2004&rft_id=10.1016%2FS0140-6736(11)60310-3&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Martin&rft.aulast=Than&rft.au=Than%2C+Martin&rft.title=The+Lancet&rft.date=2011&rft.issn=0140-6736&rft.atitle=A+2-h+diagnostic+protocol+to+assess+patients+with+chest+pain+symptoms+in+the+Asia-Pacific+region+(ASPECT)%3A+A+prospective+observational+validation+study&rft.volume=377&rft.issue=9771&rft.genre=article