"" , - , , , BMC Research Notes. 26 - 12-15 . 15 "", 11 . - (). , - . , , "", , - , , . , 6 , 22 38 . 6, , , 22 38 , , - , , . , , 32, 6, 8, 9, 46 40. . , , , , . . "" 6 1984 .