1. Belsh JM. Differential diagnosis of ALS: Part I. Non-motor neuron diseases and adult-onset spinal muscular atrophies. In: Belsh JM, Schiffman PL (eds). Amyotrophic Lateral Sclerosis: Diagnosis and Management for the Clinician. Armonk, NY: Futura, 1996: 85–129.
2. Misdiagnosis in Patients With Amyotrophic Lateral Sclerosis
3. Chiò A, Mocellini C, Terena A, Schiffer D. Misdiagnosis in ALS: therapeutic and psychological implications. Presented at 5th International Symposium on ALS/MND, Noordwijk, Holland, 1994.