18F-fluorodeoxyglucose positron emission tomography in elderly patients with an elevated erythrocyte sedimentation rate of unknown origin. oleh Karel-Jan D F Lensen, Alexandre E Voskuyl, Conny J van der Laken, Emile F I Comans, Dirkjan van Schaardenburg, Alex B Arntzenius, Ton Zwijnenburg, Frank Stam, Michelle Gompelman, Friso M V D Zant, Anneke Q A van Paassen, Bert J Voerman, Frits Smit, Sander Anten, Carl E Siegert, Arjen Binnerts, Yvo M Smulders