title: Epidemiology. China's unique environment favors large intervention trials.
authors.forename: J
authors.initials: J
authors.lastname: Mervis
mesh_terms: D002681:China / Q000453:epidemiology; D002908:Chronic Disease / Q000453:epidemiology; D002986:Clinical Trials as Topic; D005492:Folic Acid / Q000008:administration & dosage; D006509:Hepatitis B / Q000453:epidemiology; D017325:Hepatitis B Vaccines; D006801:Humans; D015994:Incidence; D008113:Liver Neoplasms / Q000517:prevention & control; D009436:Neural Tube Defects / Q000453:epidemiology / Q000517:prevention & control; D016032:Randomized Controlled Trials as Topic; D013274:Stomach Neoplasms / Q000453:epidemiology / Q000517:prevention & control*
chemical_list: D017325:Hepatitis B Vaccines; D005492:Folic Acid