Pengaruh kombinasi minyak atsiri pala (myristica fragrans) dan kenanga (cananga odorata) sebagai aromaterapi terhadap penurunan derajat insomnia pada wanita paruh baya = The combination effect of nutmeg (myristica fragrans) and cananga (cananga odorata) essential oils as aromatherapy toward reduction of insomnia degree in middle aged women