(1) As well, information about the prevalence, etiology , and treatment of disorders in Canada provides a base from which comparable findings from other countries are discussed.(2) Further research regarding the etiology , natural history, pathophysiology, and treatment of subclinical hyperthyroidism is warranted.(3) She presented one year ago with fever, weakness, hepatitis and pneumonitis of unknown etiology .(4) The exact etiology of osteoarthritis is unknown.(5) Infectious origins are suspected for many human diseases of unknown etiology , on the basis of epidemiologic and clinical features.(6) After her retirement, she took up the challenge to understand the etiology of bipolar disorder.(7) Researchers study etiology in order to develop more effective approaches to treatment and, ultimately, prevention.(8) DNA samples from 195 children with chronic lung disease of unknown etiology were analyzed.(9) Al Qaeda's etiology and appeal cannot, as is sometimes argued, be reduced to American support for Israel.(10) The etiology of asthma is unknown, but it has been linked to occupational exposures, genetics, and environmental factors.(11) Whatever the etiology of this success for Harvard University Press, Hardt and Negri have evidently hit upon what people want to hear.(12) Study findings have sparked research on the etiology of acute salpingitis, new approaches to treatment, and the immunopathogenesis of C. trachomatis infection in women.(13) Siegel further highlighted the role of abuse in the etiology of female crime in an investigation of women survivors of childhood sexual abuse.(14) Rheumatoid arthritis is a debilitating, chronic multisystem disease with an unknown etiology .(15) As to the etiology of this state of spiritual decline, many historical factors can be held responsible.(16) The etiology , natural history, and optimal treatment of respiratory failure have been the subject of active investigation for over 100 years.