References
Ziegler AG, Schmid S, Huber D et al. (2003) Early infant feeding and risk of developing type 1 diabetes-associated autoantibodies. JAMA 290, 1721-1728.
Zutavern A, von Mutius E, Harris J et al. (2004) The introduction of solids in relation to asthma and eczema. Arch Dis Child 89, 303-308.