In 1998, Wakefield et al. reported a link between the administration of the MMR vaccine and a form of autism, igniting panic and contributing to a public health issue that continues today. Intentional or not, the research was flawed with bias. (You can read more about Wakefield's study and fraudulent reporting here: Wakefield's article linking MMR vaccine and autism was fraudulent.)

Ethical issues such as confirmation bias, whether intentional or unintentional, hold a significant impact for consumers of research. 

How can a manager or healthcare team work to prevent confirmation bias in EBM? As always, provide substantive support of your views and opinions using appropriate research articles.