Health impact of US military service in a large population-based military cohort: findings of the Millennium Cohort Study, 2001-2008

[11] Corbeil TE(2007)Demographic and occupational predictors of early response to a mailed invitation to enroll in a longitudinal health study BMC Med Res Methodol 7 6-9

[12] Hooper TI(2007)The physical and mental health of a large military cohort: baseline functional health status of the Millennium Cohort BMC Public Health 7 340-314

[13] Gray GC(1997)World-Wide Web survey research benefits, potential problems, and solutions Behav Res Methods Instrum Comput 29 274-174

[14] Chesbrough KB(2009)Postcards encourage participant updates Epidemiology 20 313-265

[15] Ryan MAK(1977)The measurement of observer agreement for categorical data Biometrics 33 159-3282

[16] Amoroso PJ(2000)Protecting the health of U.S. military forces: a national obligation Aviat Space Environ Med 71 260-133

[17] Boyko EJ(2003)US military smallpox vaccination program experience JAMA 289 3278-501

[18] Gackstetter GD(2008)Self-reported adverse health events following smallpox vaccination in a large prospective study of US military service members Hum Vaccin 4 127-22

[19] Riddle JR(2000)Illnesses among United States veterans of the Gulf War: a population-based survey of 30,000 veterans J Occup Environ Med 42 491-427

[20] Hooper TI(2004)Combat duty in Iraq and Afghanistan, mental health problems, and barriers to care N Engl J Med 351 13-512

[11] Corbeil TE(2007)Demographic and occupational predictors of early response to a mailed invitation to enroll in a longitudinal health study BMC Med Res Methodol 7 6-9

[12] Hooper TI(2007)The physical and mental health of a large military cohort: baseline functional health status of the Millennium Cohort BMC Public Health 7 340-314

[13] Gray GC(1997)World-Wide Web survey research benefits, potential problems, and solutions Behav Res Methods Instrum Comput 29 274-174

[14] Chesbrough KB(2009)Postcards encourage participant updates Epidemiology 20 313-265

[15] Ryan MAK(1977)The measurement of observer agreement for categorical data Biometrics 33 159-3282

[16] Amoroso PJ(2000)Protecting the health of U.S. military forces: a national obligation Aviat Space Environ Med 71 260-133

[17] Boyko EJ(2003)US military smallpox vaccination program experience JAMA 289 3278-501

[18] Gackstetter GD(2008)Self-reported adverse health events following smallpox vaccination in a large prospective study of US military service members Hum Vaccin 4 127-22

[19] Riddle JR(2000)Illnesses among United States veterans of the Gulf War: a population-based survey of 30,000 veterans J Occup Environ Med 42 491-427

[20] Hooper TI(2004)Combat duty in Iraq and Afghanistan, mental health problems, and barriers to care N Engl J Med 351 13-512