Fehnel S, Zografos L, Curtice T, Shah H, McLeod L. The burden of restless legs syndrome: an assessment of work productivity, sleep, psychological distress, and health status among diagnosed and undiagnosed individuals in an internet-based panel. Patient. 2008 Jul 1;1(3):201-10.
Johnson FR, Mansfield CA. Survey-design and analytical strategies for better healthcare stated-choice studies. Patient. 2008;1(4):299-307.
Arab L, Jardack P, Anthony MS, Schoeller DA. Validity and feasibility of self administered multiple web-based 24 hour recalls: diet day. FASEB J. 2008.