Arrangements for the development of 1,905 primary health centers in the Kingdom of Saudi Arabia are being finalized by the Ministry of Health. The health centers aim to improve the quality of medical services and will be classified into four categories, Saudi Gazette today quoted a report of Al-Madina Arabic daily as saying. The health centers will have advanced laboratories, X-ray facilities and supporting equipment. Last year, 50 million patients went to health centers for medical services, the report said.