IraqSwitzerlandPerfumeSchistosomatidaeMilitary PersonnelWarWorld Health OrganizationAfghanistanCombat DisordersClinical ProtocolsHospitals, UniversityHospitals, MilitaryWorld HealthQuestionnairesBlast InjuriesRetrospective StudiesPopulation SurveillanceVeteransRisk FactorsPrevalenceStress Disorders, Post-TraumaticMilitary MedicineRegistriesIncidence