Douma, Matthew J., Handley, Anthony J., Djärv, Therese, Zideman, David A., Singletary, Eunice M., MacKenzie, Ella, Raitt, James, Orkin, Aaron, Berry, David, Bendall, Jason, O'Dochartaigh, Domhnall, Picard, Christopher, Carlson, Jestin N.. Elsevier; 2022. The recovery position for maintenance of adequate ventilation and the prevention of cardiac arrest: A systematic review.