Table 2. Publications that met many inclusion criteria but were not included.

Title	Author	Year	Reason for exclusion
Centers of excellence for neuromodulation: a critical proposal	Levy	2014	Does not answer the research question
Managing orthopedics and neurosciences costs through standard treatment protocols	McGinnity and Pluth	1994	Full text unavailable
Neurotrauma at the All India Institute of Medical Sciences Bhubaneswar: An Overview	Dash et al.	2019	Does not answer the research question
Partnerships for science-based development: Neuroscience Network as a practical model	Kenney Wallace et al.	1996	Full text unavailable
Quality Spine Care: Healthcare Systems, Quality Reporting, and Risk Adjustment	Ratliff et al.	2018	Does not answer the research question
Overcoming barriers to neurosurgical training in Tanzania: International exchange, curriculum development, and novel methods of resource utilization and subspecialty development	Ormond et al.	2018	Does not answer the research question
Improving Outcomes with Subspecialization and Regionalization	Das and Guillaume	2018	Does not answer the research question
Neuroscience - Your Next Center of Excellence	Souhrada	1988	Full text unavailable
Development of the Neurological Institute: a strategic, improvement, and systems approach	Tinsley et al.	2011	Does not answer the research question
Neuroimaging to develop in African centers of excellence	Kalaria	2001	Full text unavailable
Under one roof: The Miami Project to Cure Paralysis model for spinal cord injury research	Kleitman	2001	Does not answer the research question
Neurosurgery at All India Institute of Medical Sciences, a center of excellence: A success story	Singh et al.	2015	Does not answer the research question
Neurosciences: creating a center of excellence	Coile and Markham	2003	Does not answer the research question
Advances in management of neurosurgical trauma in different continents	Coile et al.	2001	Does not answer the research question