Nayar, DKapil, UJoshi, Y KSundaram, K RSrivastava, S PShukla, N KTandon, R K1998-10-062009-06-041998-10-062009-06-041998-10-06Nayar D, Kapil U, Joshi YK, Sundaram KR, Srivastava SP, Shukla NK, Tandon RK. Association of vitamin A, zinc, selenium and magnesium with oesophageal cancer. Tropical Gastroenterology. 1998 Oct-Dec; 19(4): 148-9http://imsear.searo.who.int/handle/123456789/124896engCase-Control StudiesChromatography, High Pressure LiquidEsophageal Neoplasms --bloodHumansMagnesium --bloodSelenium --bloodVitamin A --bloodZinc --bloodJournal Article