Additional file 1: Table S1. of Too much sitting and all-cause mortality: is there a causal link? BiddleStuart BennieJason BaumanAdrian ChauJosephine DunstanDavid OwenNeville StamatakisEmmanuel van UffelenJannique 2016 Characteristics of systematic reviews with primary papers included and causality colour coding for both systematic reviews and primary study papersa. (DOCX 25 kb)