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Marshall JB, Patel M, Mahajan RJ, Early DS, King PD, Banerjee B.Marshall JB, et al. Among authors: king pd.Gastrointest Endosc. 1999 Jun;49(6):720-6. doi: 10.1016/s0016-5107(99)70289-0.Gastrointest Endosc. 1999.PMID: 10343216Clinical Trial.
Early DS, Saifuddin T, Johnson JC, King PD, Marshall JB.Early DS, et al. Among authors: king pd.Am J Gastroenterol. 1999 Jul;94(7):1862-5. doi: 10.1111/j.1572-0241.1999.01219.x.Am J Gastroenterol. 1999.PMID: 10406249
Afridi SA, Barthel JS, King PD, Pineda JJ, Marshall JB.Afridi SA, et al. Among authors: king pd.Gastrointest Endosc. 1995 May;41(5):485-9. doi: 10.1016/s0016-5107(05)80008-2.Gastrointest Endosc. 1995.PMID: 7615228Clinical Trial.
Marshall JB, Afridi SA, King PD, Barthel JS, Butt JH.Marshall JB, et al. Among authors: king pd.Am J Gastroenterol. 1996 Aug;91(8):1503-6.Am J Gastroenterol. 1996.PMID: 8759650