YouTube as a Source of Patient Information on External Cephalic Version: Cross-Sectional Study. - van Dijk, Merle R; van der Marel, Anne-Fleur; van Rheenen-Flach, Leonie E; Ganzevoort, Wessel; Moll, Etelka; Scheele, Fedde; Velzel, Joost (JMIR Formative Research, 2024)