PREVELANCE OF GALLSTONES DISEASE IN NORMAL POPULATION IN TURKEY - BEYLER, Ali Reşit; UZUNALİMOĞLU, Özden and GÖREN, Ali and ÖZDEN, Ali and SİPAHİ, Nihat and KESİM, Erol and; ECİ, Abdulkadir and ÇOLAK, Turan and PALABIYIKOĞLU, Murah and ÇETİNKAYA, Hülya (Turkish Journal of Gastroenterology, 1993)