Operation Ouch!: The HuManual

Chris van Tulleken is an infectious diseases doctor at the Hospital for Tropical Diseases in London. He trained at Oxford and has a PhD in molecular virology from University College London where he is an Associate Professor. His research focuses on how corporations affect human health especially in the context of child nutrition and he works with UNICEF and The World Health Organisation on this area. As one of the BBC's leading broadcasters for children and adults his work has won two BAFTAs. He lives in London with his wife and two children.

Dan Green is the original concept creator, author and illustrator of the Busy Day series. Dan has over 25 years' experience illustrating and designing a wide variety of children's books for a range of clients and publishers.