APA

Grob A. T. M., Veen A. A. C., Schweitzer K. J., Withagen M. I. J., van Veelen G. A. & van der Vaart C. H. (20151102). Measuring echogenicity and area of the puborectalis muscle: method and reliability. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Chicago

Grob A T M, Veen A A C, Schweitzer K J, Withagen M I J, van Veelen G A and van der Vaart C H. 20151102. Measuring echogenicity and area of the puborectalis muscle: method and reliability. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Harvard

Grob A. T. M., Veen A. A. C., Schweitzer K. J., Withagen M. I. J., van Veelen G. A. and van der Vaart C. H. (20151102). Measuring echogenicity and area of the puborectalis muscle: method and reliability. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

MLA

Grob A T M, Veen A A C, Schweitzer K J, Withagen M I J, van Veelen G A and van der Vaart C H. Measuring echogenicity and area of the puborectalis muscle: method and reliability. : Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology. 20151102.