@article{Nokuthula Sacolo2015, author = "Hlengiwe Nokuthula Sacolo and Min-Huey Chung and Hsin Chu and Yuan-Mei Liao and Chiung-Hua Chen and Keng-Liang Ou and Lu-I Chang and Kuei-Ru Chou", title = "{Schematic representation of measured variables in the current study: exogenous and endogenous variables.}", year = "2015", month = "12", url = "https://plos.figshare.com/articles/figure/_Schematic_representation_of_measured_variables_in_the_current_study_exogenous_and_endogenous_variables_/739608", doi = "10.1371/journal.pone.0067289.g001" }