TY - GEN AU - Hendrick,D J TI - Asthma: epidemics and epidemiology SN - 0040-6376 PY - 1989///1117 KW - Air Pollutants KW - adverse effects KW - Asthma KW - epidemiology KW - Environment KW - Humans N1 - Publication Type: Journal Article; Review UR - https://doi.org/10.1136/thx.44.8.609 ER -