Bob Phillips talks you through this month's Archimedes questions.

Firstly: Does vitamin D supplementation prevent acute lower respiratory tract infections in children?

Secondly: What are the risk factors for antibiotic resistant Gram-negative bacteraemia in children with cancer?

Links:

Towards evidence based medicine in paediatrics: predictive factors - http://adc.bmj.com/content/100/9/892.2.full

Question 1 - http://adc.bmj.com/content/100/9/892.1.full