Dietary nitrate and nitrite levels in an endemic upper gastrointestinal (esophageal and gastric) cancer region of Turkey - TÜRKDOĞAN, M. Kürşat; TESTERECİ, Haluk and AKMAN, Nevzat and KAHRAMAN, Tahir and KARA, Kazım and TUNCER, İlyas and UYGAN, İsmail (Turkish Journal of Gastroenterology, 2003)