1. Guidelines for the ethical conduct of studies to evaluate drugs in pediatric populations (RE9503);American Academy of Pediatrics;Pediatrics,1995
2. In loco parentis: minimal risk as an ethical threshold for research upon children;Freedman;Hastings Cent Rep,1993
3. The ethics of paying for children's participation in research;Wendler;J Pediatr,2002
4. Directive 2001/20/ec of the European Parliament and of the Council of 4 April 2001 on the approximation of the laws, regulations, and administrative provisions of the Member States relating to the implementation of good clinical practice in the conduct of clinical trials on medicinal products for human use. Article 4(d).