1. Annual Health Report. Kingdom of Saudi Arabia, 1406 (1986). Riyadh, Ministry of Health 1986: 3.(Arabic).
2. Lucas AO, Gillies HM: A Short Textbook of Preventive Medicine for the Tropics. London: Hodder and Stoughton, 1984: pp 276?277.
3. Health Interview Survey: Results of the First Cycle. (Health Profile of Egypt). Arab Republic of Egypt: Ministry of Health publication No. 16; 1982: Table 6.5.
4. Sebai ZA, El-Hazmi MAF, Serenius S. Health profile of preschool children in Tamnia villages. Saudi Med J 2 (suppl 1): 68?71, 1981.
5. Bhatty MA, Al-Sibai H, Marwah SM. A survey of mother and child case in Saudi community in Rabaiyah, Tarut Island. Saudi Med J 4: 37?43, 1983.