El, A., Hösli, I., Nelle, M., Surbek, D., Wisser, J., Zimmermann, R., Fauchère, J., & Truttmann, A. (2011). Perinatal care at the limit of viability between 22 and 26 completed weeks of gestation in Switzerland. Swiss Medical Weekly, 141(4142), w13280. https://doi.org/10.4414/smw.2011.13280