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Risk Factors for Asthma: Gender, Genetics, Allergies, and More - WebMD
Asthma - Symptoms and causes - Mayo Clinic
Asthma Risk Factors: Sex, Age, Family History, and More
What Causes Asthma? | American Lung Association
Risk factors for asthma - UpToDate
Asthma: Types, Causes, Symptoms, Diagnosis & Treatment
Asthma - World Health Organization (WHO)
What Are Possible Risk Factors for Asthma?
Asthma attack - Symptoms and causes - Mayo Clinic
Asthma: Causes, Symptoms, and Treatment - WebMD
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