TY - GEN AU - Holt,D C AU - Simpson,R G TI - Occult blood in faeces SN - 0140-6736 PY - 1970///0205 KW - Blood Chemical Analysis KW - Feces KW - analysis KW - Humans KW - Methods N1 - Publication Type: Comparative Study; Journal Article UR - https://doi.org/10.1016/s0140-6736(70)90551-9 ER -