Author Correction: Basolateral protrusion and apical contraction cooperatively drive Drosophila germ-band extension.

In the version of this Article originally published, the authors cited the wrong articles for reference numbers 18, 30 and 31; the correct ones are listed below. Furthermore, four additional references have been inserted at numbers 37, 38, 39 and 40 as in the list below, and the original references 37-40 have been renumbered. These corrections have been made in the online versions of the Article.