Use DOI for Cholec80

README.md

@@ -39,7 +39,7 @@ Videos from the following datasets were used for finetuning:
 * [**Cholec80**](http://camma.u-strasbg.fr/datasets/), as described in
 
     A.P. Twinanda, S. Shehata, D. Mutter, J. Marescaux, M. de Mathelin, N. Padoy, EndoNet: A Deep Architecture for Recognition
-    Tasks on Laparoscopic Videos, IEEE Transactions on Medical Imaging (TMI), [arXiv preprint](http://arxiv.org/abs/1602.03012), 2017
+    Tasks on Laparoscopic Videos, IEEE Transactions on Medical Imaging (TMI), [arXiv preprint](https://doi.org/10.48550/arXiv.1602.03012), 2017
 * [**MultiBypass140**](https://github.com/CAMMA-public/MultiBypass140), as described in
 
     Lavanchy, J.L., Ramesh, S., Dall’Alba, D. et al. Challenges in multi-centric generalization: phase and step recognition