Prolonged erections produced by dihydrocodeine and sildenafil

In the penultimate paragraph of this “Drug point” by David Goldmeier and Harpal Lamba (29 June, p 1555) we wrongly edited out “we suggest that.” The sentence should read: “We suggest that the acute opiate intake in our patients on sildenafil produced abnormally high cyclic guanosine monophosphate concentrations in peripheral nerve endings, which resulted in prolonged erections even after orgasm.”