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  • Book
    David S. Chang, Foster D. Lasley, Indra J. Das, Marc S. Mendonca, Joseph R. Dynlacht.
    Summary: This book is a concise and well-illustrated review of the physics and biology of radiation therapy intended for radiation oncology residents, radiation therapists, dosimetrists, and physicists. It presents topics that are included on the Radiation Therapy Physics and Biology examinations and is designed with the intent of presenting information in an easily digestible format with maximum retention in mind. The inclusion of mnemonics, rules of thumb, and reader-friendly illustrations throughout the book help to make difficult concepts easier to grasp. Basic Radiotherapy Physics and Biology is a valuable reference for students and prospective students in every discipline of radiation oncology.
    Digital Access Springer 2014
  • Article
    Antonova IV, Konstantinow-Siebelist I.
    Bull World Health Organ. 1978;56(6):931-5.
    Analysis of clinical data collected by the epidemiological services in both countries showed that each shift or drift in the antigenic structure of the influenza virus resulted in epidemics in both countries. Depending on the degree of antigenic change, both shifts and drifts influenced the speed of epidemic spread and the time of occurrence and the intensity of the epidemics. However, the analyses did not reveal a direct relation between degree of antigenic variation and the attack rate or the severity of the epidemic. The mean attack rate in both countries was about 13% depending on the pathogenicity of the circulating virus. The severity of the epidemics varied in the two countries but the fourth epidemic after each shift was severe in both countries. The reasons for this and other features of the epidemiology are discussed.
    Digital Access Access Options