PITFALLS IN TESTING WITH LINEAR REGRESSION MODEL BY OLS. THE RECENT CASE STUDY OF RAMADAN FASTING EFFECTS ON SEX-RATIO AT BIRTH, AND BIRTH WEIGHT IN GERMAN MUSLIM BABIES. - HERTELIU, Claudiu; ILEANU, Bogdan-Vasile; AUSLOOS, Marcel; ROTUNDO, Giulia (Journal of Applied Quantitative Methods, 2015)