Saudi Arabia, authoritatively known as the Kingdom of Saudi Arabia (KSA), is an Arab state in Western Asia constituting the majority of the Arabian Peninsula. With an area region of around 2,150,000 km2 (830,000 sq mi), Saudi Arabia is topographically the fifth-biggest state in Asia and second-biggest state in the Arab world (after Algeria).
Saudi Arabia is flanked by Jordan and Iraq toward the north, Kuwait toward the upper east, Qatar, Bahrain, and the United Arab Emirates toward the east, Oman toward the southeast, and Yemen toward the south. It is the main country with both a Red Sea coast and a Persian Gulf coast, and a large portion of its territory comprises of bone-dry cold desert or infertile landforms.
Saudi Arabia has an oil-based economy with strong government control over major economic activities. Saudi Arabia possesses 18% of the world's proven petroleum reserves, ranks as the largest exporter of petroleum, and played a leading role in OPEC for many years. The petroleum sector accounts for almost all of Saudi government revenues, and export earnings. Most workers, particularly in the private sector, are foreigners. Saudi Arabia is member of G20.
Numerous Gastroenterology journals are published from Saudi Arabia with good reputation like Arab Journal of Gastroenterolgy and The Saudi Joural of Gasteroenterology. According to SCImago Journal & Country rank Saudi Arabia acquired 39th position in publishing articles in Gasteroenterology. Several leading Institution in the country including King Abdulaziz University, King Abdulaziz University, King Saud University, King Saud University.