Dr. Murray, <i>et al</i> reply

To the Editor: We thank Drs. Hettema and Smit for their letter1 and their interest in our report2. We agree that a discrepancy between our finding of an increase in skin fluorescence in patients with systemic sclerosis (SSc) and their finding of no increased fluorescence may be due to either different measurement systems or different locations of measurement. The technique that … Address correspondence to Dr. A.K. Murray, University of Manchester, Translational Medicine, Oxford Road, Manchester M13 9PL, UK. E-mail: Andrea.Murray{at}manchester.ac.uk