REFERENCES
- Devenny A, Wassall H, Ninan T, Omran M, Khan SD, Russell G. Respiratory symptoms and atopy in children in Aberdeen: Questionnaire studies of a defined school population repeated over 35 years. BMJ 2004; 329:489–490.
- Yazdanbakhsh M, Kremsner PG, van RR. Allergy, parasites, and the hygiene hypothesis. Science 2002; 296:490–494.
- Devereux G. The increase in the prevalence of asthma and allergy: Food for thought. Nat Rev Immunol 2006; 6:869–874.
- IMF Advanced Economies List. World Economic Outlook, October 2008. Retrieved 12 November 2008 from http://www.imf.org/external/pubs/ft/weo/2008/02/weodata/groups.htm#ae.
- Zollner IK, Weiland SK, Piechotowski I, Gabrio T, von ME, Link B, Pfaff G, Kouros B, Wuthe J. No increase in the prevalence of asthma, allergies, and atopic sensitisation among children in Germany: 1992--2001. Thorax 2005; 60:545–548.
- Pearce N, it-Khaled N, Beasley R, Mallol J, Keil U, Mitchell E, Robertson C; and the ISAAC Phase Three Study Group. Worldwide trends in the prevalence of asthma symptoms: Phase III of the International Study of Asthma and Allergies in Childhood (ISAAC). Thorax 2007; 62:758–766.
- Leung TF, Wong GW. The Asian side of asthma and allergy. Curr Opin Allergy Clin Immunol 2008; 8:384–390.
- Braman SS. The global burden of asthma. Chest 2006; 130(1 suppl):4S–12S.
- King J. A review of bibliometric and other science indicators and their role in research evaluation. J Inform Sci 1987; 13:261–276.
- Wallin JA. Bibliometric methods: Pitfalls and possibilities. Basic Clin Pharmacol Toxicol 2005; 97:261–275.
- Borger JA, Neye N, Scutaru C, Kreiter C, Puk C, Fischer TC, Groneberg-Kloft B. Models of asthma: Density-equalizing mapping and output benchmarking. J Occup Med Toxicol 2008; 3 suppl 1:S7.
- OECD Glossary of Statistical Terms Basic Research. OECD Frascati Manual, Sixth edition. Retrieved 12 November 2008 from http://stats.oecd.org/glossary/detail.asp?ID=192.
- Re-engineering the Clinical Research Enterprise Translational Research. National Institutes of Health,Office of Portfolio Analysis and Strategic Initiatives. Retrieved 12 November 2008 from http://nihroadmap.nih.gov/clinicalresearch/overview-translational.asp.
- Re-engineering the Clinical Research Enterprise Overview. National Institutes of Health, Office of Portfolio Analysis and Strategic Initiatives. Retrieved 12 November 2008 from http://nihroadmap.nih.gov/clinicalresearch/.
- Glossary of Cochrane Collaboration and research terms. The Cochrane Collaboration. Retrieved 12 November 2008 from http://www.cochrane.org/resources/glossary.htm.
- Michalopoulos A, Falagas ME. A bibliometric analysis of global research production in respiratory medicine. Chest 2005; 128:3993–3998.
- Hirsch JE. An index to quantify an individual's scientific research output 1. Proc Natl Acad Sci U S A 2005; 102:16569–16572.
- Midyear populations 2007 and estimated 2007 gross domestic product per capita (PPP). CIA Central Intelligence Agency The World Factbook 2008. Retrieved 18 October 2008 from https://www.cia.gov/library/publications/download/.
- Masoli M, Fabian D, Holt S, Beasley R. The global burden of asthma: Executive summary of the GINA Dissemination Committee report. Allergy 2004; 59:469–478.
- Stewart AW, Mitchell EA, Pearce N, Strachan DP, Weilandon SK. The relationship of per capita gross national product to the prevalence of symptoms of asthma and other atopic diseases in children (ISAAC). Int J Epidemiol 2001; 30:173–179.
- Falagas ME, Pitsouni EI, Malietzis GA, Pappas G. Comparison of PubMed, Scopus, Web of Science, and Google Scholar: Strengths and weaknesse 1. FASEB J 2008; 22:338–342.
- Wong GW, Leung TF, Ko FW, Lee KK, Lam P, Hui DS, Fok TF, Lai CK. Declining asthma prevalence in Hong Kong Chinese schoolchildren. Clin Exp Allergy 2004; 34:1550–1555.
- Leung RC, Carlin JB, Burdon JG, Czarny D. Asthma, allergy and atopy in Asian immigrants in Melbourne. Med J Aust 1994; 161: 418–425.
- Ng TP, Niti M, Tan WC. Trends and ethnic differences in asthma hospitalization rates in Singapore, 1991 to 1998. Ann Allergy Asthma Immunol 2003; 90:51–55.
- Li XM. Traditional Chinese herbal remedies for asthma and food allergy. J Allergy Clin Immunol 2007; 120:25–31.
- Huntley A, Ernst E. Herbal medicines for asthma: A systematic review. Thorax 2000; 55:925–929.
- Singh BB, Khorsan R, Vinjamury SP, Der-Martirosian C, Kizhakkeveettil A, Anderson TM. Herbal treatments of asthma: A systematic review. J Asthma 2007; 44:685–698.