Blastocyst embryo transfer is associated with a sex-ratio imbalance in favor of male offspring
November 19, 2010
Martha Luna, M.D., Marlena Duke, M.Sc., Alan Copperman, Lawrence Grunfeld, M.D., Benjamin Sandler, M.D., and Jason Barritt, Ph.D.
Fertil Steril 2007;87:519 –23.