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Design and methodological considerations in the National Cooperative Gallstone Study: A multicenter clinical trial

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RCTs JM Lachin, JW Marks, LJ Schoenfield, MP Tyor… - Controlled Clinical …, 1981 - Elsevier

Chapter : Section1, Section2
Journal Year : 1981
Cited by : 54

… Each patient followed up to 2 yr according to a standard protocol with routine laboratory screening for liver abnormalities and standardized clinical management, where indicated. …..... Read More

Keywords : ['national cooperative gallstone study', 'multicenter clinical trial', 'methodological consideration', 'design']
PubMed Link : https://www.sciencedirect.com/science/article/pii/019724568190012X
Google Scholar Link : https://scholar.google.com/scholar?cites=13561380095748535246&as_sdt=2005&sciodt=0,5&hl=en&num=20