Inclusion criteria
atopic, atopic dermatitis, eczema, infantile eczema
ATOPIC DERMATITIS, ATOPIC, INFANTILE ECZEMA, DISEASES, ECZEMA
For the infants with eczema:(1) full-term infant at or under 12 months old; (2) diagnosed as infantile eczema based on the clinical criteria for pediatric atopic dermatitis (For the healthy infants: (1) same as (1) and (3) for the infants with eczema above; (2) infants without any history of obvious visceral and functional diseases; (3) infants without eczema and other atopic diseases.