Cite
HARVARD Citation
Pisa, F. et al. (n.d.). Accuracy of International Classification of Diseases, 9th Revision, Clinical Modification codes for upper gastrointestinal complications varied by position and age: a validation study in a cohort of nonsteroidal anti‐inflammatory drugs users in Friuli Venezia Giulia, Italy1. Pharmacoepidemiology and drug safety. pp. 1195-1204. [Online].