ALTER TABLE opd_risk_screen ADD `risk_memo` text NULL
ALTER TABLE opd_risk_screen ADD `heart_risk` CHAR(1) NULL
ALTER TABLE opd_risk_screen ADD `diabete_risk` CHAR(1) NULL
ALTER TABLE opd_risk_screen ADD `hypertension_risk` CHAR(1) NULL
ALTER TABLE opd_risk_screen ADD `advice_staff` VARCHAR(25) NULL
CREATE TABLE opd_risk_screen ( `vn` VARCHAR(13) NOT NULL )