%0 Journal Article %A Roberta Heale %A Alison Twycross %T What is a case study? %D 2017 %R 10.1136/eb-2017-102845 %J Evidence Based Nursing %P ebnurs-2017-102845 %U https://ebn.bmj.com/content/ebnurs/early/2017/11/16/eb-2017-102845.full.pdf