haji ali afzali,H. (2003). Identification of the combination of diseases, the average length of stay and the cost of treatment for the elderly covered by the social security organization in the field of hospital services in large Tehran. Social Security Journal, 4(1), 182-205.

haji ali afzali,H. . "Identification of the combination of diseases, the average length of stay and the cost of treatment for the elderly covered by the social security organization in the field of hospital services in large Tehran", Social Security Journal, 4, 1, 2003, 182-205.

haji ali afzali H. (2003). 'Identification of the combination of diseases, the average length of stay and the cost of treatment for the elderly covered by the social security organization in the field of hospital services in large Tehran', Social Security Journal, 4(1), pp. 182-205.

H. haji ali afzali, "Identification of the combination of diseases, the average length of stay and the cost of treatment for the elderly covered by the social security organization in the field of hospital services in large Tehran," Social Security Journal, 4 1 (2003): 182-205,

haji ali afzali H. Identification of the combination of diseases, the average length of stay and the cost of treatment for the elderly covered by the social security organization in the field of hospital services in large Tehran. Social Security Journal, 2003; 4(1): 182-205.