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Karlstrom LH, Soper NJ, Kelly KA, Phillips SF.Karlstrom LH, et al. Among authors: phillips sf.Surgery. 1989 Sep;106(3):486-95.Surgery. 1989.PMID: 2672401
Soper NJ, Chapman NJ, Kelly KA, Brown ML, Phillips SF, Go VL.Soper NJ, et al. Among authors: phillips sf.Gastroenterology. 1990 Jan;98(1):111-6. doi: 10.1016/0016-5085(90)91298-k.Gastroenterology. 1990.PMID: 2293569
Fich A, Neri M, Camilleri M, Kelly KA, Phillips SF.Fich A, et al. Among authors: phillips sf.J Clin Gastroenterol. 1990 Oct;12(5):505-12.J Clin Gastroenterol. 1990.PMID: 2229993