WebThe 1950 Wynder and Graham Study was conducted by Ernest Wynder and Evarts Graham and was entitled "Tobacco Smoking as a Possible Etiologic Factor in Bronchiogenic Carcinoma: A Study of Six Hundred and Eighty-Four [684] Proved Cases". It was published on May 27, 1950. It was a case-control study to determine the relationship between … WebThe incidence of lung cancer is low in most African countries, but it is increasing. In addition to tobacco smoking, a number of etiological factors have been identified for lung cancer: indoor exposure to environmental tobacco smoke, cooking oil vapour, coal burning, or radon, outdoor air pollution and occupational exposure to asbestos and ...
Accelerating the understanding of cancer biology through the …
Webcancer by a factor of about 2.5 [42] in a population with a prevalence in older persons of about 50%, then the Popula-tion Attributable Risk or Etiologic Fraction is only about 40% [119]. Given the evidence for an increase in reflux symptoms on eradication of H. pylori [120] and the links between longstanding reflux symptoms [20] and obesity WebThe evolution of epidemiologic understanding from number of sexual partners as a risk factor for cervical cancer (hypothesized to reflect transmission of on infectious agent) (Pereyra, 1961; Schiffman et al., 1993; Beral, 1974) to defining the etiologic agent (Franco et al., 1999), and then developing an effective vaccine for cervical and anal ... golfmoose my account
Supervised mutational signatures for obesity and other tissue
WebNational Center for Biotechnology Information WebPrimary liver cancer is one of the most prevalent human tumors worldwide. It recognizes a number of etiological factors and is one of the few human tumors to show a highly significant association to chronic viral infections. Chronic infections by hepatitis B and C viruses are major risk factors for subsequent development of primary liver cancer. WebQuestion: Serum estradiol is an important risk factor for breast cancer in postmenopausal women. To better understand the etiology of breast cancer, serum-estradiol samples were collected from 25 premenopausal women (at about the same time period of the menstrual cycle) of whom 10 were Caucasian and 15 were African American. health authority usa