Article 2 controlled study 2 gene interaction 2 gene mutation genetic epidemiology 2 genetic risk 2 genotype 2 genotype environment interaction 2 human 2 single nucleotide polymorphism 2 Biased samples 1 COVID-19 1 Case–control study 1 Crohn disease 1 Genetic epidemiology 1 Gene–environment interaction 1 Semiparametric estimation 1 adult 1 alcohol consumption 1 assessment of humans 1 body mass 1 cancer risk 1 cardiometabolic risk 1 case control study 1 cohort analysis 1 coronavirus disease 2019 1 disease severity 1 female 1 gamma interferon 1 gene frequency 1