User-documented food consumption data from publicly available apps: an analysis of opportunities and challenges for nutrition research.
Nutrition Journal
Maringer, Marcus M; Van't Veer, Pieter P; Klepacz, Naomi N; Verain, Muriel C D MCD; Normann, Anne A; Ekman, Suzanne S; Timotijevic, Lada L; Raats, Monique M MM; Geelen, Anouk A