Prenatal gunshot wound, a rare cause of maternal and fetus trauma, a case report by Molina, GA, Aguayo, WG, Cevallos, JM, Gálvez, PF, Calispa, JF, Arroyo, KA, Guzmán, LJ, Cobo, MM, Gutierrez, BM, Toapanta, RT, Briceño, MM