TY - RPRT TI - Monozygotic twinning and structural defects. AU - A A Schinzel AU - D W Smith AU - J R Miller PY - 1979 DO - 10.1016/s0022-3476(79)80278-4 UR - https://pubmed.ncbi.nlm.nih.gov/501497/ ID - 501497 ER -