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IVIg withdrawal schedule in a patient on a 4-weekly interval. (A) An example schedule of the investigational treatment in a patient with an IVIg interval of 4 weeks. Follow-up visits were performed every 6 weeks. (B) Restabilization phase consisting of a loading dose and maintenance treatment. Follow-up visits were performed at 3, 6 and 12 weeks. (C) Extension study: maintenance treatment was at the physician’s discretion. Follow-up visits were performed at 12, 24 and 52 weeks.
