Helen Ramsbottom1, Paul Rutter2, Ray Fitzpatrick3. 1. School of Pharmacy and Biomedical Sciences, Maudland Building, University of Central Lancashire, Preston, PR1 2HE, UK; Southport and Ormskirk Hospital NHS Trust, Town Lane, Southport, PR8 6PN, UK. Electronic address: helen.ramsbottom@nhs.net. 2. School of Pharmacy and Biomedical Sciences, Maudland Building, University of Central Lancashire, Preston, PR1 2HE, UK. 3. School of Pharmacy, Keele University, Staffordshire, ST5 5BG, UK.