TY - GEN AU - Thomas,R E AU - Torgerson,D AU - Reid,D M TI - Bone density and milk. Low recruitment rate may introduce selection bias SN - 0959-8138 PY - 1994///0804 KW - Animals KW - Bone Density KW - Humans KW - Milk KW - Selection Bias N1 - Publication Type: Comment; Letter; Research Support, Non-U.S. Gov't ER -