TY - RPRT TI - Tetranucleotide repeat polymorphism in the vWF gene. AU - H K van Amstel AU - P H Reitsma PY - 1990 DO - 10.1093/nar/18.16.4957-a UR - https://pubmed.ncbi.nlm.nih.gov/2395671/ ID - 2395671 ER -