@article{article, title  = {{Developing a summary hospital mortality index: Retrospective analysis in English hospitals over five years}},

 url = {{}},

 year = {{2012}},

 month = {{3}},

 author = {{Campbell MJ and Jacques RM and Fotheringham J and Maheswaran R and Nicholl J}},

 doi = {{10.1136/bmj.e1001}},

 volume = {{344}},

 journal = {{BMJ Online}},

 issue = {{7848}},

 note = {{Accessed on 2025/11/29}}}