Seventy-five of the US’s 3,000-plus counties make up 50 per cent of all new job growth, not 75 per cent of the counties as incorrectly stated in Rana Foroohar’s column on January 15.

Guided growth for angular correction: a preliminary series using a tension band ... Differential limb loading in miniature pigs (Sus scrofa domesticus): a test of chondral modeling theory. J Exp Biol ...