title: Asthma and early childhood infectious disease. Critical time for protective effect of large family on asthma may not be during first year of life.
authors.forename: A L
authors.initials: AL
authors.lastname: Ponsonby
authors.forename: A
authors.initials: A
authors.lastname: Kemp
mesh_terms: D000367:Age Factors; D001249:Asthma / Q000821:virology*; D005191:Family Characteristics; D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D012141:Respiratory Tract Infections / Q000150:complications*