British Association of Dermatologists and British Photodermatology Group guidelines for the safe and effective use of psoralen–ultraviolet A therapy 2015

the quality of evidence and making the appropriate recommendations. When considered helpful to assist with comparing study results and to summarize data, forest plots drawn in Excel (Microsoft, Redmond, WA, U.S.A.) were used, 3 although no formal meta-analyses were performed to prepare this guideline. All subsections were subsequently collated and edited to produce the final guideline.