Robert S. Knorr

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A 1981 Massachusetts Department of Public Health study confirmed a childhood leukemia cluster in Woburn, Massachusetts. Our follow-up investigation attempts to identify factors potentially responsible for the cluster. Woburn has a 130-year industrial history that resulted in significant local deposition of tannery and chemical manufacturing waste. In 1979,(More)
We determined medical costs and family out-of-pocket expenses over time for 569 children with malignant neoplasms. All medical charges (inpatient and outpatient), family out-of-pocket expenses, and wages lost were collected and annualized. The mean cost of cancer care and treatment per patient-year was $29,708, with variation by diagnosis, prognosis, and(More)
OBJECTIVE The high prevalence of systemic lupus erythematosus (SLE) among African American women may be due to environmental exposures, genetic factors, or a combination of factors. Our goal was to assess association of residential proximity to hazardous waste sites and genetic variation in 3 glutathione Stransferase (GST) genes (GSTM1, GSTT1, and GSTP1)(More)
A total of 43 severely ill COPD patients already on 24 h, or near 24 h, per day supplemental O2 were randomly assigned to transtracheal oxygen delivery (n = 22) or usual delivery of O2 by nasal cannula or face mask (n = 21). A few important changes were found in pulmonary function over time such as decreases of PEFR, FEF and MVV for both experimental and(More)
The Massachusetts Department of Public Health, in collaboration with the U.S. Centers for Disease Control and Prevention Environmental Public Health Tracking Program, initiated a 3-year statewide project for the routine surveillance of asthma in children using school health records as the primary data source. School district nurse leaders received(More)
Possible associations between adult leukemia incidence and proximity-based surrogate measures of potential for exposure to radioactive emissions from the Pilgrim nuclear power plant in Plymouth, Massachusetts, were investigated. Included in this study were 105 nonchronic lymphocytic leukemia cases, diagnosed between 1978 and 1986 at age 13 y or older, that(More)
BACKGROUND Asthma is the most common chronic disease among children today, yet surveillance is limited to national and state estimates which can vary over time, by location and by population types. This article describes a comprehensive statewide school-based asthma surveillance program and examine 5 years of surveillance data. METHODS After pilot(More)
Larger and larger numbers of US nationals are studying medicine abroad and they now comprise the foremost national group of foreign medical graduates (FMGs) seeking to enter the US health care system. The Educational Commission for Foreign Medical Graduates (ECFMG) is currently conducting a comprehensive study of 205,542 graduates of foreign medical schools(More)
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