Additional file 1. Supplementary table 1. Keywords and/or ICD codes used for recruiting patients through CDARS. Supplementary table 2. Institutional Review Board (IRB) numbers of involved hospitals in Hong Kong. Supplementary table 3. Clinical presentations by system and age distribution of patients at disease onset. Supplementary table 4. NMDC score for cases with histological examination done on biopsy (total 51). Supplementary table 5. Characteristics of death cases (total 44). Supplementary table 6. Detail of cases with sudden death (total 10). Supplementary table 7. Types of tissue samples obtained by invasive procedures (total 59 patients) and the examination performedCharacteristics.
