Analysis of information sources in references of the Wikipedia article "Conjoined twins" in English language version.
one could predict dizygotic conjoined twins occurring less than 1 in every 4.7 billion ovulation cycles
one could predict dizygotic conjoined twins occurring less than 1 in every 4.7 billion ovulation cycles
one could predict dizygotic conjoined twins occurring less than 1 in every 4.7 billion ovulation cycles