Correspondence to Dr Nils Krone, Academic Unit of Child Health, Department of Oncology and Metabolism, University of Sheffield, Sheffield S10 2TH, UK; n.krone{at}sheffield.ac.uk Steroid biosynthesis ...

Objective The ‘GP check’ at 6–8 weeks forms part of the selective surveillance system for developmental dysplasia of the hip (DDH) in the UK. It is imperative to pick up DDH within the first months of ...