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Contributors JM contributed to data acquisition, analysis and interpretation, and manuscript preparation. MS contributed to data acquisition, data analysis and manuscript preparation. RVS contributed to study design/conception, data acquisition, data analysis, data interpretation and manuscript preparation. VHYI contributed to study conception, data analysis and manuscript review. BCHT contributed to study conception, data interpretation and manuscript preparation.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests BCHT contributed to the design of the E-Cath Stim used in the patient.
Provenance and peer review Not commissioned; externally peer reviewed.