Pharmacokinetics of Ganciclovir after Oral Valganciclovir versus Intravenous Ganciclovir in Allogeneic Stem Cell Transplant Patients with Graft-versus-Host Disease of the Gastrointestinal TractDrew J. Winston, Voravit Ratanatharathorn, Werner Lange et al.|Biology of Blood and Marrow Transplantation|2006Cited by 71