Merck This article is intended for UK based healthcare professionals. This article has been funded by Merck Serono Ltd. Merck Serono Ltd has paid Prof. Thomas Powles an honorarium for his involvement but views expressed are his own, based on his individual experience.

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This article is intended for UK based healthcare professionals. This article has been funded by Merck Serono Ltd. Merck Serono Ltd has paid Prof. Thomas Powles an honorarium for his involvement but views expressed are his own, based on his individual experience.