I would a good introduction about medication errors and their clinical and economic impact

I would a good introduction about medication errors and their clinical and economic impact
I would to find a suitable methodology for this study
the aims and objectives ( I have attached word format shows the objectives) so i would to make the proposal to goes with the objectives and if you can develop it.
I would to apply this short proposal for universities to get over for studying a PhD. About the standard of writing, i want normal academic level for student.