TY - JOUR AU - Freis, A; Freundl-Schütt, T; Wallwiener, L M TI - Plausibility of menstrual cycle apps claiming to support conception JO - Front Public Health VL - 6 PY - 2018 DO - 10.3389/fpubh.2018.00098 L3 - PubMed-ID: 29666788 SP - 98 ER -