Letter to the editor [2] (multiple letters) Tekijä Tavallali, A, Soheilian, M, Newsom, R, Johnston, R, Sullivan, P, Aylward, G, Holder, G, Gregor, Z, Satchi, K, Bolton, A, Patel, C, Herbert, E, Laidlaw, D, Williamson, T, Habib, M, Steel, D