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AirForce:10.1212/01.wnl.0000326964.26673.8e
AirForce:10.1212/WNL.0b013e3181c91847
AirForce:10.1212/WNL.0b013e3181cef633
AirForce:10.1212/WNL.0b013e31825dce83
AirForce:10.1212/WNL.0b013e31826aac33
AirForce:10.1212/WNL.58.8.1214