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Faust, Alexandre Michel; Fournier, Roxane; Gamulin, Zdravko . (2006). Perioperative Analgesia With Posterior Continuous Lumbar Plexus Block for Simultaneous Ipsilateral Total Hip and Knee Arthroplasty. Regional Anesthesia and Pain Medicine, 31(6), 591–. doi:10.1097/00115550-200611000-00027 
10.1097/00115550-200611000-00027