Dr. Alan Copperman, director of Infertility at Mount Sinai Hospital, in New York, talks about new guidelines that recommend just one baby at a time
The Centers for Disease Control say the rate of twin births is up 76 percent over three decades - many, the result of fertility treatments. Dr. Alan Copperman, director of Infertility at Mount Sinai Hospital, in New York, talks about new guidelines that recommend just one baby at a time.
