Design and methodological considerations in the National Cooperative Gallstone Study: A multicenter clinical trial
Primary Author
Lachin,John M.
Marks,Jay W.
Schoenfield,Leslie J.
NCGS Protocol Committee
Tyor,Malcolm P.
Bennett,Peter H.
Grundy,Scott M.
Hardison,William G. M.
Shaw,Lawrence W.
Thistle,Johnson L.
Vlahcevic,Z. R.
National Cooperative Gallstone Study Group
Volume
2
Issue
3
Start Page
177
Other Pages
229
Publisher
Elsevier Inc
URL
https://www.sciencedirect.com/science/article/pii/019724568190012X
PMID
7326939