title: Optimizing therapy with 6-mercaptopurine and azathioprine: to measure or not to measure?
authors.affiliation: Department of Gastroenterology, University of Miami Miller School of Medicine, Miami, FL, USA.
authors.forename: Amar R
authors.initials: AR
authors.lastname: Deshpande
authors.forename: María T
authors.initials: MT
authors.lastname: Abreu