Plasma and cerebrospinal fluid pharmacokinetics of topotecan in a phase i trial of topotecan, tamoxifen, and carboplatin, in the treatment of recurrent or refractory brain or spinal cord tumors

Robert J. Morgan, Timothy Synold, Adam Mamelak, Dean Lim, Zaid Al-Kadhimi, Przemyslaw Twardowski, Lucille Leong, Warren Chow, Kim Margolin, Stephen Shibata, George Somlo, Yun Yen, Paul Frankel, James H. Doroshow