prov:value
| - The coexistence of risk factors in the environment (ie, day care attendance, siblings, and smoking), anatomy and other genetically predisposing factors (ie, atopy, low IgG subclasses or IgA deficiency, and low response to polysaccharide vaccination), or potentially additional polymorphisms, for instance in the Toll-like receptor pathway, may together lead to a URI-prone condition, particularly at
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