TY - RPRT TI - Reference values for differences between cardio-circulatory variables of normal twin fetuses. AU - S E Sonesson AU - J C Fouron AU - L Leduc AU - M Lessard AU - A Grignon PY - 2000 DO - 10.1046/j.1469-0705.2000.00124.x UR - https://pubmed.ncbi.nlm.nih.gov/10976483/ ID - 10976483 ER -