Babl, F., Mackay, M., Borland, M., Herd, D., Kochar, A., Hort, J., Rao, A., Cheek, J., Furyk, J., Barrow, L., George, S., Zhang, M., Gardiner, K., Lee, K., Davidson, A., Berkowitz, R., Sullivan, F., Porrello, E., Dalziel, K., Anderson, V., Oakley, E., Hopper, S., Williams, F., Wilson, C., Williams, A., & Dalziel, S. (2017). bell's Palsy in Children (BellPIC): protocol for a multicentre, placebo-controlled randomized trial. BMC pediatrics, 17(1), 1–11. http://access.bl.uk/ark:/81055/vdc_100081121451.0x0001c5