Sakai Y, Tsuyuguchi T, Ishihara T, Yukisawa S, Ohara T, Tsuboi M, Ooka Y, Kato K, Katsuura K, Kimura M, Takahashi M, Nemoto K, Miyazaki M, Yokosuka O. Is ERCP really necessary in case of suspected spontaneous passage of bile duct stones? World J Gastroenterol 2009; 15(26): 3283-3287 [PMID: 19598305 DOI: 10.3748/wjg.15.3283]