Article Citation
Olafsdottir LB, Gudjonsson H, Jonsdottir HH, Thjodleifsson B. Natural history of heartburn: A 10-year population-based study. World J Gastroenterol 2011; 17(5): 639-645 [PMID: 21350713 DOI: 10.3748/wjg.v17.i5.639]
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