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![Ioannis BELLOS | Professor (Associate) | PhD | George Mason University, VA | GMU | Department of Information Systems and Operations Management Ioannis BELLOS | Professor (Associate) | PhD | George Mason University, VA | GMU | Department of Information Systems and Operations Management](https://www.researchgate.net/profile/Ioannis-Bellos-3/publication/280561295/figure/fig3/AS:520778242158592@1501174616255/Exerting-more-effort-at-the-first-or-the-last-service-step_Q320.jpg)
Ioannis BELLOS | Professor (Associate) | PhD | George Mason University, VA | GMU | Department of Information Systems and Operations Management
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