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El Naqa I, Irrer J, Ritter TA, DeMarco J, Al-Hallaq H, Booth J, Kim G, Alkhatib A, Popple R, Perez M, Farrey K, Moran JM.El Naqa I, et al. Among authors: popple r.Med Phys. 2019 Apr;46(4):1914-1921. doi: 10.1002/mp.13433. Epub 2019 Mar 4.Med Phys. 2019.PMID: 30734324Free article.