Update README.md

Updated citation information.

README.md

@@ -62,12 +62,14 @@ If you are interested in the collection of PMC-Patients and reproducing our base
 If you find PMC-Patients helpful in your research, please cite our work by:
 
 ```
-@misc{zhao2023pmcpatients,
-      title={PMC-Patients: A Large-scale Dataset of Patient Summaries and Relations for Benchmarking Retrieval-based Clinical Decision Support Systems}, 
-      author={Zhengyun Zhao and Qiao Jin and Fangyuan Chen and Tuorui Peng and Sheng Yu},
-      year={2023},
-      eprint={2202.13876},
-      archivePrefix={arXiv},
-      primaryClass={cs.CL}
+@article{zhao2023large,
+  title={A large-scale dataset of patient summaries for retrieval-based clinical decision support systems},
+  author={Zhao, Zhengyun and Jin, Qiao and Chen, Fangyuan and Peng, Tuorui and Yu, Sheng},
+  journal={Scientific Data},
+  volume={10},
+  number={1},
+  pages={909},
+  year={2023},
+  publisher={Nature Publishing Group UK London}
 }
 ```