Unexplained differences in sex ratios at birth in Europe and North America

In the table accompanying this Research Pointer by Victor Grech and colleagues (27 April, pp 1010-1), readers may have been surprised to see that Denmark and Finland seemed to have exactly the same numbers of female and total live births. This was in fact an error, which arose during editing and was not picked up on the proofs. The figures for Finland were correct, but for Denmark the number of female live births are 1  588 490 and total live births 3 269 412.