Work in progress: quality of life (QoL) and neurological disease - trajectories of outcome in neurological conditions (TONiC): a study protocol by Gibbons, C, Cousins, R, Pomeroy, I, Ando, H, Al-Chalabi, A, Chataway, J, Constaninescu, C, Ealing, J, Hawkins, C, Morrison, K, Palace, J, Robertson, N, Rog, D, Scolding, N, Sharrack, B, Shaw, P, Talbot, K, Williams, T, Tennant, A, Young, C, Grp, T