Stanford University's Adult and Pediatric Pain Lab is conducting research to identify biomarkers for Gulf War Illness. We are currently looking for men who served in the First Gulf War to participate in our research study. This includes both healthy veterans and those with Gulf War Illness. Our research study involves daily blood draws and symptom recording via a handheld electronic device. Participants will receive monetary compensation in the amount of $650 for completion of the entire study. If you are interested in participating or finding out more information, please reply to this post or call 650-724-2065. Thank you in advance for your help, The Stanford pain research team: Jarred Younger, PhD Elizabeth Stringer, PhD Katharine Baker, BS Website: http://younger.stanford.edu/ Facebook: https://www.facebook.com/YoungerPainLab