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. 2008 Apr 16;2008(2):CD005536. doi: 10.1002/14651858.CD005536.pub2
CENTRAL MEDLINE/CINAHL EMBASE
#1. ASTHMA explode tree 1 (MeSH)
 #2. BRONCHIAL SPASM single term (MeSH)
 #3. asthma*
 #4. wheez*
 #5. (bronch* near spas*)
 #6. bronchospas*
 #7. bronchoconstrict*
 #8. (#1 or #2 or #3 or #4 or #5 or #6 or #7)
 #9. NEBULIZERS AND VAPORIZERS explode all trees (MeSH)
 #10. spacer*
 #11. mdi
 #12. nebuli*
 #13. vapori*
 #14. aerosol*
 #15. inhal*
 #16. bronchodilat*
 #17. (#9 or #10 or #11 or #12 or #13 or #14 or #15 or #16)
 #18. (#8 and #17)
 #19. home‐made*
 #20. (home next made*)
 #21. alternative*
 #22. improvi*
 #23. bottle*
 #24. ((plastic or paper) and cup*)
 #25. polystyrene
 #26. (#19 or #20 or #21 or #22 or #23 or #24 or #25)
 #27. (#26 and #18) 1. exp asthma/
 2. bronchial spasm/
 3. asthma$.mp.
 4. wheez$.mp.
 5. (bronch$ adj3 spas$).mp.
 6. bronchospas$.mp.
 7. bronchoconstrict$.mp.
 8. or/1‐7
 9. exp nebulizers/ and vaporizers/
 10. spacer$.mp.
 11. MDI.mp.
 12. nebuli$.mp.
 13. vapori$.mp.
 14. aerosol$.mp.
 15. inhal$.mp.
 16. bronchodilat$.mp.
 17. or/9‐16
 18. "home made".mp.
 19. alternative$.mp.
 20. improvi$.mp.
 21. bottle$.mp.
 22. ((plastic$ or paper$) adj3 cup).mp.
 23. polystyrene.mp.
 24. or/18‐23
 25. 8 and 17 and 24 1. exp asthma/
 2. Bronchospasm/
 3. asthma$.mp.
 4. wheez$.mp.
 5. (bronch$ adj3 spas$).mp.
 6. bronchospas$.mp.
 7. bronchoconstrict$.mp.
 8. or/1‐7
 9. exp nebulizer/
 10. spacer$.mp.
 11. MDI.mp.
 12. nebuli$.mp.
 13. vapori$.mp.
 14. aerosol$.mp.
 15. inhal$.mp.
 16. bronchodilat$.mp.
 17. or/9‐16
 18. "home made".mp.
 19. alternative$.mp.
 20. (improvis$ or improviz$).mp.
 21. bottle$.mp.
 22. ((plastic$ or paper$) adj3 cup).mp.
 23. polystyrene.mp.
 24. or/18‐23
 25. 8 and 17 and 24