Typical features of Parkinson disease and diagnostic challenges with microdeletion 22q11.2.

Boot E, Butcher NJ, Udow S, Marras C, Mok KY, Kaneko S, Barrett MJ, Prontera P, Berman BD, Masellis M, Dufournet B, Nguyen K, Charles P, Mutez E, Danaila T, Jacquette A, Colin O, Drapier S, Borg M, Fiksinski AM, Vergaelen E, Swillen A, Vogels A, Plate A, Perandones C, Gasser T, Clerinx K, Bourdain F, Mills K, Williams NM, Wood NW, Booij J, Lang AE, Bassett AS; International Research Group on 22q11.2DS-associated Parkinson's Disease.