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Dennis Hey, Hwee Weng, Denise Ai Wen Choong, Adrian Zhigao Lin, Eugene Tze-Chun Lau, Alex Quok An Teo, Gabriel Liu, i Hee-Kit Wong. "Patient and Radiographer Assessment of Slump Sitting Flexion Compared to Conventional Standing Forward Bending Flexion." J Spine Surg 2018.

Dennis Hey, Hwee Weng, et al. "Patient and Radiographer Assessment of Slump Sitting Flexion Compared to Conventional Standing Forward Bending Flexion." J Spine Surg 2018.