TY - RPRT TI - Why smoke fewer cigarettes? AU - D O Ho-Yen AU - V A Spence AU - J P Moody AU - W F Walker PY - 1982 DO - 10.1136/bmj.284.6333.1905 UR - https://pubmed.ncbi.nlm.nih.gov/6805754/ ID - 6805754 ER -