In contrast to the legal concept (art. 30 of the Civil Code) which requires survival for 24 hours from the moment of complete separation from the maternal womb, and to the definition currently used in the birth statistics which makes the distinction of live birth, we use this term in its purely biological sense of the complete expulsion or extraction from the body of the mother of any product of conception, alive or dead weighing more than 500 grams or, if the weight is unknown, after more than 22 weeks of gestation.