Birth expectations, birth experiences and childbirth‐related post‐traumatic stress symptoms in mothers and birth companions: Dyadic investigation using response surface analysis. - Buyukcan‐Tetik, Asuman; Seefeld, Lara; Bergunde, Luisa; Ergun, Turan Deniz; Dikmen‐Yildiz, Pelin; Horsch, Antje; Garthus‐Niegel, Susan; Oosterman, Mirjam; Lalor, Joan; Weigl, Tobias; Bogaerts, Annick; Van Haeken, Sarah; et al. (British Journal of Health Psychology, 2024)