RT Journal Article SR Electronic T1 Is the packed cell volume รท 3 rule valid for estimating haemoglobin in children in malarious areas? JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP archdischild-2017-313974 DO 10.1136/archdischild-2017-313974 A1 Wilma Francisca Tanga A1 Andrew James McArdle YR 2017 UL http://adc.bmj.com/content/early/2017/11/29/archdischild-2017-313974.abstract AB