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  1. Results - Screening for Chronic Obstructive Pulmonary Disease - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK361189
    ... smoking exposure ranged from 19.5 to 40.4 pack-years. 36 , 39 , 89 , 111 , 115 Three studies ... smokers, and participants had a mean of 33.4 pack-years of smoking exposure. The reference standard used ...
  2. pdfNovember2005.pdf 
    https://www.ncbi.nlm.nih.gov/books/NBK2592/bin/November2005.pdf
    ... Microbial Genomes 6 Nucleotide Database Splits 6 NCBI 4-Pack Course 7 RefSeq Release 14 7 New Organisms ... of the NCBI news. —MR NCBI Courses NCBI 4-Pack: Practical Web-based Analysis. March 15-16, 2006 ...
  3. pdfNational Library of Medicine - Programs and Services FY2007 
    https://www.nlm.nih.gov/ocpl/anreports/fy2007.pdf
    ... the entire suite of Entrez databases. The “NCBI 4-Pack” course provides information on practical applications of bioinformatics ... the four-day PowerScripting and the two-day four-pack workshops, and for larger groups. Education: Extramural Educational ...
  4. NLM Digital Collections - On the use of the cold pack followed by massage in the treatment of anaemia 
    Publication: New York : Putnam, 1880
    resource.nlm.nih.gov/65630410R
    ... 25th No. II. 24 hours 24 hours . Before pack 4 hours 2 hrs. blanket pack . 18 hours after ... o-595 0.231 1.83 25th Before pack 8 hours . . 14. 21.721 4-143 10.772 6.806 1.346 0. ...
  5. pdfNLM Traveling Exhibitions Shipping Instructions 
    https://www.nlm.nih.gov/.../exhibitions/Shipping_Instructions.pdf
    ... tag with a plastic tie to each container. 4. Pack the banners and hardware into the cloth bags ...
  6. pdfNational Library of Medicine - Programs and Services FY2008 
    https://www.nlm.nih.gov/ocpl/anreports/fy2008.pdf
    ... across the entire suite of Entrez databases. “NCBI 4-Pack” provided information on practical applications of bioinformatics resources. ...
  7. pdfprintableinstructions.pdf 
    https://www.nlm.nih.gov/.../pdfs/printableinstructions.pdf
    ... will keep books from sticking together when frozen. 4 PACK IN CARTONS OR BOXES • Pack spine down, one ...
  8. pdfNational Library of Medicine - Programs and Services, Fiscal Year 2006 
    https://www.nlm.nih.gov/ocpl/anreports/fy2006.pdf
    ... the entire suite of Entrez databases. The “NCBI 4-Pack” course provides information on practical applications of bioinformatics ...
  9. pdfNational Library of Medicine - Programs and Services, Fiscal Year FY05 
    https://www.nlm.nih.gov/ocpl/anreports/fy2005.pdf
    ... the entire suite of Entrez databases. The “NCBI 4-Pack” course provides information on practical applications of bioinformatics ...
  10. NLM Digital Collections - Obstetrics : a text-book for the use of students and practitioners 
    Publication: New York : Appleton, 1915
    resource.nlm.nih.gov/101164804
    ... certain cases of placenta O THE TAMPON OR PACK 4s;, praevia, and to dilate the cervix in the ... XXIV. When removed at the end of twenty-four hours, the pack frequently brings with it the intact ovum; but, ...
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