Dr. Guille holds many leadership positions in National medical organizations. He has lectured extensively both nationally and internationally on the topics of pediatric orthopaedics and spinal disorders. He has published over 60 articles and 15 book chapters, and has edited two books. He sits on the editorial boards of the Journal of Bone and Joint Surgery, Clinical Orthopaedics and Related Research, Journal of Pediatric Orthopaedics, Spine, Pediatrics, and Orthopedics