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Regmi, Rajesh, D. Michael Lovelock, Pengpeng Zhang, Hai Pham, Jianping Xiong, Ellen D. Yorke, Karyn A. Goodman, Abraham J. Wu, and Gig S. Mageras. "Technical Note: Intrafractional Changes in Time Lag Relationship between Anterior–posterior External and Superior–inferior Internal Motion Signals in Abdominal Tumor Sites." Med Phys 2015.

Regmi, Rajesh, et al. "Technical Note: Intrafractional Changes in Time Lag Relationship between Anterior–posterior External and Superior–inferior Internal Motion Signals in Abdominal Tumor Sites." Med Phys 2015.