title: Environmental influences on fertility, pregnancy, and development. Field studies: lessons learned.
mesh_terms: D000969:Antinematodal Agents / Q000633:toxicity; D006801:Humans; D007248:Infertility, Male / Q000139:chemically induced; D008297:Male; D009153:Mutagens; D009784:Occupational Diseases / Q000139:chemically induced*; D011159:Population Surveillance; D011407:Propane / Q000031:analogs & derivatives / Q000633:toxicity; D012098:Reproduction / Q000187:drug effects; D012107:Research Design; D012306:Risk; D012661:Semen / Q000032:analysis; D013076:Sperm Count; D014481:United States
chemical_list: D000969:Antinematodal Agents; D009153:Mutagens; C007318:1,2-dibromo-3-chloropropane; D011407:Propane