NCT00890435 2015-10-21Decision Making About Participating in Pharmacokinetic Studies in Patients Enrolled in a Phase I Treatment Clinical TrialChildren's Oncology GroupCompleted53 enrolled
NCT00757614 2013-08-26Study of Genes and Environment in Patients With Cancer in East Anglia, Trent, or West Midlands Regions of the United KingdomNational Cancer Institute (NCI)Unknown14,000 enrolled