Elective caesarean on request

An error occurred in this cluster of letters (9 January, pp 120-2). The last two letters, by Adam Rosenthal and Richard J Howard, concentrate on the second part of the argument by Amu et al, not, as incorrectly stated, on the first part of the argument by Paterson-Brown. Both letters should have started “Amu et al,” rather than “Paterson-Brown et al” as published.