This program is designed to determine the sex of the child to update blood parents. It is believed that the sex of the child depends on the parent who has the blood more "fresh". In men, the blood is updated every 4 years, women - every 3 years. Also updated the blood after birth, after abortion, miscarriage, and after a heavy loss of blood, so to accurately determine the sex of the child, the date for the parents should indicate the date of the last blood loss (childbirth, abortion, miscarriage, etc.), in the absence of - enter a date of birth parent.Warning:The program is for entertainment purposes and is not a guarantee of determining the sex of the child. To accurately determine the sex of the child, refer to the gynecologist's office and the U.S..