Author Information:

Harriet Griffey is a freelance writer, print and broadcast journalist who writes regularly for UK national newspapers and magazines. She originally trained as a nurse at the Middlesex Hospital, London but subsequently worked in book publishing, television, radio and journalism. She is the author of numerous books including The Really Useful A-Z of Pregnancy and Birth, The Art of the Nap and Boost Your Child's Immune System. She has two sons and lives in London.