PT - JOURNAL ARTICLE AU - Al-Karawi, Mohamed A. TI - Trans-nasal route. The new way of upper gastrointestinal technique diagnostic endoscopy DP - 2000 Jan 01 TA - Saudi Medical Journal PG - 3--4 VI - 21 IP - 1 4099 - http://smj.org.sa/content/21/1/3.short 4100 - http://smj.org.sa/content/21/1/3.full SO - Saudi Med J2000 Jan 01; 21