Hadker N, Greene B, Brown TM, Harshman R, Richerson G, Turner B. Impact of the BP downshift program on blood pressure control among commercial driver's license employees: a managed care perspective. Am J Manag Care. 2007 Mar;13(2).
Cole JA, Rothman KJ, Cabral HJ, Zhang Y, Farraye FA. Incidence of IBS in a cohort of people with asthma. Dig Dis Sci. 2007 Feb 28;52(2):329-35.