Peripheral Nerve Society Guideline on processing and evaluation of nerve biopsies - Sommer, CL; Brandner, S; Dyck, PJ; Harati, Y; LaCroix, C; Lammens, M; Magy, L; Mellgren, SI; Morbin, M; Navarro, C; Powell, HC; Schenone, AE; Tan, E; Urtizberea, A; Weis, J (J Peripher Nerv Syst, 2010)