TY - GEN AU - LEVIN,M L TI - Screening for asymptomatic disease; principles and background SN - 0021-9681 PY - 2003///0501 KW - Asymptomatic Diseases KW - Humans KW - Medicine KW - Preventive Medicine N1 - Publication Type: Journal Article UR - https://doi.org/10.1016/0021-9681(55)90177-6 ER -