Omission from a contributors statement ====================================== A research article that appeared in the Mar. 3, 2014, issue of *CMAJ* contains an error. The statement, “Vincent Y.F. Su and C.J. Liu contributed equally to this manuscript” was omitted from the contributors statement. *CMAJ* apologizes for this omission. ## Reference 1. Su VY, Liu CJ, Wang HK, et al. Sleep apnea and risk of pneumonia: a nationwide population-based study. CMAJ. 2014;186:415–21. [Abstract/FREE Full Text](http://www.cmaj.ca/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiQUJTVCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiY21haiI7czo1OiJyZXNpZCI7czo5OiIxODYvNi80MTUiO3M6NDoiYXRvbSI7czoyNDoiL2NtYWovMTg2LzE0LzEwOTIuMy5hdG9tIjt9czo4OiJmcmFnbWVudCI7czowOiIiO30=)