Hubungan antara riwayat penyakit, asupan protein dan faktor-faktor lain yang berhubungan dengan status gizi peserta Posyandu lansia di Kecamatan Grogol Petamburan Jakarta Barat tahun 2011 = The association between historical of disease, protein intake and other factors related to the nutritional status of the elderly Posyandu participants at the Grogol Petamburan Subdistrict, West Jakarta, year 2011