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  1. Exercise and Physical Fitness 
    https://medlineplus.gov/exerciseandphysicalfitness.html
    Exercise is one of the most important things you can do for your health. The key is to find the right exercise for you. Get the facts about fitness. ... Regular exercise ...
  2. Heart Disease Risk Assessment: MedlinePlus Medical Test 
    https://medlineplus.gov/lab-tests/heart-disease-risk-assessment
    ... that measures how well your heart handles physical activity References American College of Cardiology [Internet]. Washington D.C.: ...
  3. pdf1959-62.pdf 
    https://www.nlm.nih.gov/hmd/manuscripts/nlmarchives/bor/1959-62.pdf
    ... weeks at WHO Headquarters doing a survey of reference activities at the request of Dr» Candau, WHO Director- ... June for the purpose of coordinating biomedical informational activities, with particular reference to those of the biological sciences communications project ...
  4. NLM Digital Collections - Hospital literature index (Volume 44) 
    resource.nlm.nih.gov/7807587X31
    ... Q 1987 Winter;6(4):27-33 UTILIZATION Reference activity and the external user: confluence of community needs ... Serv 1988 Mar; 65(2):20-l UTILIZATION Reference activity and the external user: confluence of community needs ...
  5. Marfan Syndrome - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK1335
    ... a value at or above the 99th percentile. References and calculators for this determination are available at the National ...
  6. NLM Digital Collections - Index-catalogue of the Library of the Surgeon General's Office, United States Army (Series 4, ... 
    Publication: Washington : U.S. G.P.O., 1936-1948
    resource.nlm.nih.gov/8104688X10
    ... A. Some peculiar manifestations of memory with special reference to lightning calculators. J. Nerv. Ment. Dis., 1940, 92: 709-26.— ... V. V., & Brody, S: Growth and development, with special reference to domestic animals. Pt 43: Diurnal metabolic and activity rythms. 30p. 23cm. Columbia, Mo., 1938. Forms No. ...
  7. NLM Digital Collections - Hospital literature index (Volume 37) 
    resource.nlm.nih.gov/7807587X24
    ... facilitate analysis of large sets of data: with reference to Hospital Activity Analysis. Goldacre MJ, et al. Community Med 1981 ... facilitate analysis of large sets of data: with reference to Hospital Activity Analysis. Goldacre MJ, et al. Community Med 1981 ...
  8. NLM Digital Collections - Manual of the Medical Department of the United States Navy 
    Publication: Washington : U.S. Government Printing Office, 1943
    resource.nlm.nih.gov/14321870R
    ... forwarded in triplicate (at least) to the receiving activity making reference thereon to the approved survey. The transferring activity shall request the receiving activity to sign the ...
  9. NLM Digital Collections - Manual of the Medical Department of the United States Navy 
    Publication: Washington : United States Government Printing Office, 1942
    resource.nlm.nih.gov/14321860R
    ... forwarded in triplicate (at least) to the receiving activity making reference thereon to the approved survey. The transferring activity shall request the receiving activity to sign the ...
  10. NLM Digital Collections - History of Medical Department activities : Antilles Department : preventive medicine 
    Publication: [Washington, DC] : [Office of the Surgeon General, Historical Division], [1945?]
    resource.nlm.nih.gov/101705266
    ... Xl/9/42 MONTHLY REPORT QF MOSQUITO CONTROL ACTIVITIES (Reference: Sec I,' Memo #54, Hq AntD, 8* Apr ...
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