The authors would like to thank the following for their contributions to this chapter:
Peer reviewers: Noriko Kojimahara, Kenneth McLean, and Erin Whittingham.
Contributors to the 2012 version of this chapter: Sarah Chalmers Page, Jane Cowl, Loes Knaapen, Alix Johnson, and Carol Sakala.
The authors would like to thank Penka Marthe for translating this chapter into French.