AUTHOR=Zandonai Thomas , Escorial Mónica , Peiró Ana M. 

TITLE=Codeine and Tramadol Use in Athletes: A Potential for Abuse

JOURNAL=Frontiers in Pharmacology

VOLUME=12

YEAR=2021

URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2021.661781

DOI=10.3389/fphar.2021.661781

ISSN=1663-9812