P-214 The size of the embryo can be used as a single predictor for selecting embryo for transfer - Martynowicz, I; Wygocki, P; Gilewicz, T; Siennicki, M; Pawilk, P; Kompanowski, H; Sankowski, P; Stankiewicz, B; Kuczyńska, A; Deluga-Białowarczuk, S; Milewski, R; Sieczyński, P (Human reproduction (Oxford), 2023)