@conference {zhuang2001ergonomic, title = {Ergonomic evaluation of a prototype assistive device for moving residents up in bed}, booktitle = {Proceedings of the 6th Annual International Conference on Industrial Engineering-Theory, Applications and Practice (CD-ROM)}, year = {2001}, author = {Zhuang, Ziqing and Mahmut Ek{\c s}io{\u g}lu} }