About the Authors

David Ofori-Adjei
Gerd Antes
Prathap Tharyan
Elizabeth Slade
Pritpal S Tamber

Competing Interests

DOA, GA, and PT declare that they have no competing interests with respect to this article. ES works for Sciencenow, which is part of BioMed Central, an open-access publisher. PST works for Medicine Reports, which produces Faculty of 1000 Medicine, and is a sister company to BioMed Central.