1 Department of Palliative, Rehabilitation and Integrative Medicine, University of Texas, MD Anderson Cancer Center, 1515 Holcombe Blvd, Unit 1414, Houston, TX, 77030, USA. gabriel.lopez@mdanderson.org.
2 Division of Hematology and Oncology, Vanderbilt-Ingram Cancer Center, Nashville, TN, USA.
3 Department of Gastrointestinal Medical Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA.
4 Department of Breast Medical Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA.
5 Department of Palliative, Rehabilitation and Integrative Medicine, University of Texas, MD Anderson Cancer Center, 1515 Holcombe Blvd, Unit 1414, Houston, TX, 77030, USA.
6 Department of Neurosurgery, University of Texas, MD Anderson Cancer Center, Houston, TX, USA.
7 Department of Biostatistics, University of Texas, MD Anderson Cancer Center, Houston, TX, USA.