TY - RPRT TI - Functional deficiency of complement factor D in a monozygous twin. AU - H C Kluin-Nelemans AU - H van Velzen-Blad AU - H P van Helden AU - M R Daha PY - 1984 UR - https://pubmed.ncbi.nlm.nih.gov/6568950/ ID - 6568950 ER -