We would suggest speaking to a university or hospital librarian in the first instance and getting their advice. There are many online resources to help, including Chapter 4 of the The Cochrane Handbook and the University of Cambridge’s Library Guide to Systematic Reviews.
We do provide search strategy development for systematic reviews we are supporting, and for all clinical and research fellows funded by and working within the UK Blood Services. Please use the Contact us page if this is you and you would like to find out more, or by emailing us at [email protected].