Herrmann DN, Pannoni V, Barbano RL, et al. Skin biopsy and quantitative sensory testing do not predict response to lidocaine patch in painful neuropathies. Muscle Nerve 2006;33: 42–8.  Schiffmann R, Hauer P, Freeman B, et al. Enzyme replacement therapy and intraepidermal innervation density in Fabry disease. Muscle Nerve 2006;34:53–6.  Schiffmann R, Floeter MK, Dambrosia JM, et al. Enzyme replacement therapy improves peripheral nerve and sweat function in Fabry disease. Muscle Nerve 2003;28:703–10.  Bennett MI, Smith BH, Torrance N, et al. Can pain be more or less neuropathic? Compar- ison of symptom assessment tools with ratings of certainty by clinicians. Pain 2006;122: 289–94.