Activity and toxicity of intramuscular 1000 <scp>iu</scp>/m<sup>2</sup> polyethylene glycol‐<i>E. coli</i><scp>L‐asparaginase</scp> in the <scp>UKALL</scp> 2003 and <scp>UKALL</scp> 2011 clinical trials
British journal of haematology