Delivery of a Frank breech neonate in a hands and knees position (all fours)

From: Louwen F, Daviss B-A, Johnson KC, Reitter A. Does breech delivery in an upright position instead of on the back improve outcomes and avoid cesareans? Int J Gynecol Obstet 2017;136:151–161.
http://onlinelibrary.wiley.com/doi/10.1002/ijgo.12033/full (OpenAccess)