Rodriguez Lister, Yenisey, 		Mederos, Raul, AND 		Veciana, Nestor.
" A Retrospective Study of Patients Undergoing Gastrointestinal Surgery with or without Receiving Alvimopan: Comparing Length of Stay and Total Direct Cost" <em>Medical Research Archives</em> [Online], Volume 10 Number 7 (31 July 2022)