Hubungan kemampuan mastikasi dengan status nutrisi lansia: penelitian menggunakan alat ukur kemampuan mastikasi dan mini nutritional assessment short-form serta dilakukan di Puskesmas Kramat Jati, Jakarta Timur = The relationship between mastication ability and the nutritional status of the elderly: the study used a mastication ability measurement tool and mini nutritional assessment short-form and was conducted at the Kramat Jati Health Center, East Jakarta