I am trying to get in touch with any of the following authors listed in this publication below. I would like to request permission to adapt their methodology for Nutritional content.

How do I contact them via email or research gate?

Gimenez-Perez, G., Robert-Vila, N., Tomé-Guerreiro, M., Castells, I., & Mauricio, D. (2020). Are YouTube videos useful for patient self-education in type 2 diabetes? Health Informatics Journal.26(1):45-55. https://doi.org/10.1177/1460458218813632