RT Journal Article SR Electronic T1 Calcium deficiency rickets: extending the spectrum of ‘nutritional’ rickets JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 794 OP 795 DO 10.1136/archdischild-2014-306465 VO 99 IS 9 A1 Jeremy Allgrove A1 M Zulf Mughal YR 2014 UL http://adc.bmj.com/content/99/9/794.abstract AB