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; }