By Grant S. W.   Grayson A. D.   Purkayastha D.   Wilson S. D.   McCollum C.   in British Journal of Surgery

ISSN:1365-2168|98|5|652-658

John Wiley & Sons Inc‎(2011)‎

Access to resources Favorite 5.8893905

By Purkayastha D.D.   in Economics Letters

ISSN:0165-1765|48|1|1-7

Elsevier‎(1995)‎

Access to resources Favorite 3.0635557