RT Journal Article SR Electronic T1 Correlation does not always show a causal relationship JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1462 OP 1462 VO 28 IS 9 A1 Buyukhatipoglu, Hakan A1 Pehlivan, Yavuz A1 Geyik, Ramazan A1 Camci, Celalettin A1 Shandiz, Fatemeh H. YR 2007 UL http://smj.org.sa/content/28/9/1462.abstract AB