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2 ﹒ Sun B，Rajan E，Cheng S，et al ﹒ Diagnostic yield and therapeutic impact of double‐balloon enteroscopy in a large cohort of patients with obscure gastrointestinal bleeding ﹒ Am J Gastroenterol，2006，101.4 ﹒ Leighton JA，Triester SL，Shar ma VK，et al ﹒ Capsu ......