मोनब्रै गुबै आबहावायारि जाहोनफोरा जादों आगु उनदै समनि सनदेरथि गोनां बेरामफोर नुजानायनि सोलाय-सोलफोर, आबहावायारि गुबुंले, एलारजेन बिबांफोर, आरो आदारारि सोलाथिफोर।
The four main candidate environmental factors are alterations in exposure to infectious diseases during early childhood, environmental pollution, allergen levels, and dietary changes.