Interaction: A word with two meanings creates confusion Anders AhlbomLars Alfredsson Editorial Pages: 563 - 564
Causality in cancer epidemiology Pagona LagiouHans-Olov AdamiDimitrios Trichopoulos Review Pages: 565 - 574
Calculating measures of biological interaction Tomas AnderssonLars AlfredssonAnders Ahlbom Methods Pages: 575 - 579
A study on methods of estimating the population size of men who have sex with men in Southwest China Rongsheng LuanGang ZengYuan Li OriginalPaper Pages: 581 - 585
Can morbidity be inferred from prescription drug use? Results from a nation-wide prison population study Ellen KjelsbergPaal Hartvig OriginalPaper Pages: 587 - 592
Genotype frequencies at codon 129 of the Prion Protein Gene in Brazil: implications in susceptibility to variant Creutzfeldt--Jakob disease compared to European and Asian populations Erich Vinicius de PaulaMarcelo Addas-CarvalhoSimone Cristina Olenscki Gilli Genetic Epidemiology Pages: 593 - 595
Short and long term association of a single serum cholesterol measurement in middle-aged men in prediction of fatal coronary and other cardiovascular events: A cross-cultural comparison through Europe Alessandro MenottiMariapaola LantiAulikki Nissinen Cardiovascular Diseases Pages: 597 - 604
Different risk factor profiles between subtypes of ischemic stroke. A case-control study in Korean men Yun-Mi SongSun Uck KwonYeong Sook Yun OriginalPaper Pages: 605 - 612
Multiple births and breast cancer prognosis: A population based study Lukman ThalibSuhail A.R. DoiPer Hall Cancer Pages: 613 - 617
A 9 year prospective cohort study of endoscoped patients with upper gastrointestinal symptoms Johanna I. WestbrookAnne E. DugganMary T. Westbrook Gastrointestinal Diseases Pages: 619 - 627
Applying a case-crossover study design to examine transient exposures in the transmission of N. meningitidis R. ReintjesH. KajueterA. Ammon Infectious Diseases Pages: 629 - 633
Outbreak of typhoid fever in vaccinated members of the French Armed Forcesin the Ivory Coast Rémy MichelEric GarnotelJean-Paul Boutin OriginalPaper Pages: 635 - 642
Community epidemiology of Chlamydia and Mycoplasma pneumoniae in LRTI in France over 29 months Jacques GaillatAntoine FlahaultCharles Mayaud OriginalPaper Pages: 643 - 651