Evaluation of distal symmetric polyneuropathy: the role of autonomic testing, nerve biopsy, and skin biopsy (an evidence-based review) - England, JD; Gronseth, GS; Franklin, G; Carter, GT; Kinsella, LJ; Cohen, JA; Asbury, AK; Szigeti, K; Lupski, JR; Latov, N; Lewis, RA; Low, PA; Fisher, MA; Herrmann, D; Howard, JF; Lauria, G; Miller, RG; Polydefkis, M; Sumner, AJ (Muscle Nerve, 2009)