Methotrexate polyglutamate levels and co-distributions in childhood acute lymphoblastic leukemia maintenance therapy

Jacob Nersting, Stine Nygaard Nielsen, Kathrine Grell, Maria Paerregaard, Jonas Abrahamsson, Bendik Lund, Olafur Gisli Jonsson, Kaie Pruunsild, Goda Vaitkeviciene, Jukka Kanerva, Kjeld Schmiegelow, Nordic Society of Paediatric Haematology and Oncology (NOPHO)