Zweegman: Celgene: Membership on an entity's Board of Directors or advisory committees, Research Funding; Millennium: Membership on an entity's Board of Directors or advisory committees, Research Funding; Janssen-Cilag: Membership on an entity's Board of Directors or advisory committees, Research Funding. Mellqvist:Celgene: Honoraria; Janssen-Cilag: Honoraria; Amgen: Honoraria; Mundipharma: Honoraria. Bos:Celgene: Research Funding. van de Donk:Janssen: Research Funding; Celgene: Research Funding. Sonneveld:Celgene: Honoraria, Research Funding; Janssen: Honoraria, Research Funding; Onyx: Honoraria, Research Funding; Millenium: Honoraria, Research Funding. Waage:Janssen-Cilag: Membership on an entity's Board of Directors or advisory committees; Celgene: Membership on an entity's Board of Directors or advisory committees.