Department of Health Services Research, University of Texas M. D. Anderson Cancer Center, Houston, TX
Correspondence to: Linda S. Elting, DrPH, Chief, Section of Health Services Research, Department of Biostatistics, The University of Texas M. D. Anderson Cancer Center, PO Box 301402, Unit 1411, Houston, TX 77230-1402 (e-mail: [email protected]).
Received August 9, 2018
Received in revised form February 4, 2019
Accepted May 1, 2019
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