P. Scheepers

Increased blood loss in upright birthing positions originates from perineal damage

A. de Jonge, A. Lagro-Janssen, K. van der Pal-de Bruin, 2007, BJOG : an international journal of obstetrics and gynaecology.

Risk of perineal damage is not a reason to discourage a sitting birthing position: a secondary analysis

P. Scheepers, A. de Jonge, A. Lagro-Janssen, 2010, International journal of clinical practice.