Gastric cancer and salivary nitrate and nitrite.
D004032:Diet; D006801:Humans; D009566:Nitrates / Q000009:adverse effects*; D009573:Nitrites / Q000009:adverse effects*; D012469:Salivary Glands / Q000378:metabolism; D013274:Stomach Neoplasms / Q000209:etiology*
D009566:Nitrates; D009573:Nitrites