Authors' response to: "Re: obstetric anal sphincter injury after episiotomy in vacuum extraction: an epidemiological study using an emulated randomised trial approach: robustness and external validity of different practices": Reply: Episiotomy in vacuum extraction

BJOG. 2021 Oct;128(11):1891-1892. doi: 10.1111/1471-0528.16763. Epub 2021 Jun 10.

Victoria Ankarcrona^{1

2}, Hongwei Zhao³, Bo Jacobsson^{4

5}, Sophia Brismar Wendel^{1

2

6}

¹ Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden.
² Department of Women's Health, Danderyd Hospital, Stockholm, Sweden.
³ Department of Epidemiology and Biostatistics, School of Public Health, Texas A&M University, College Station, TX, USA.
⁴ Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden.
⁵ Department of Genetics and Bioinformatics, Domain of Health Data and Digitalization, Institute of Public Health, Oslo, Norway.
⁶ Clinical Epidemiology Division, Department of Medicine, Karolinska Institutet, Stockholm, Sweden.

No abstract available

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