1. Leukotriene receptor antagonists for allergic rhinitis: a systematic review and meta- analysis 
Andrew M Wilson, MD, Paul M O'Byrne, MB, Krishnan Parameswaran, MD 
The American Journal of Medicine 
Volume 116, Issue 5, Pages (March 2004)
DOI: /j.amjmed

2. Figure 1 Flow chart illustrating the results of the research strategy.
The American Journal of Medicine  , DOI: ( /j.amjmed )

3. Figure 2
Comparison of leukotriene receptor antagonists and placebo. The plot of weighted mean difference with 95% confidence intervals for composite rhinitis symptom scores is expressed as a percentage of the maximum score. There was significant variation in results among studies (P = 0.01 for heterogeneity).
The American Journal of Medicine  , DOI: ( /j.amjmed )

4. Figure 3
Comparison of leukotriene receptor antagonists and nasal corticosteroids. The plot of weighted mean difference with 95% confidence intervals for composite rhinitis symptom scores is expressed as a percentage of the maximum score. There was significant variation in results among studies (P = for heterogeneity).
The American Journal of Medicine  , DOI: ( /j.amjmed )

5. Figure 4
Comparison of leukotriene receptor antagonists and antihistamines. The plot of weighted mean difference with 95% confidence intervals for composite rhinitis symptom scores is expressed as a percentage of the maximum score. The results did not vary among the studies (P = 0.13 for heterogeneity). There was no significant difference between leukotriene receptor antagonists and antihistamines.
The American Journal of Medicine  , DOI: ( /j.amjmed )