public function getCalendariovacunacion(PropelPDO $con = null)
 {
     if ($this->aCalendariovacunacion === null && $this->fk_calendariovacunacion_id !== null) {
         $c = new Criteria(CalendariovacunacionPeer::DATABASE_NAME);
         $c->add(CalendariovacunacionPeer::ID, $this->fk_calendariovacunacion_id);
         $this->aCalendariovacunacion = CalendariovacunacionPeer::doSelectOne($c, $con);
     }
     return $this->aCalendariovacunacion;
 }