Delpachitra, P., Palmer, K., Onwude, J., Meagher, S., Rombauts, L., Waalwyk, K., . . . Tong, S. (2012). Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks' Gestation. International Scholarly Research Network.

Delpachitra, Pavitra, Kirsten Palmer, Joseph Onwude, Simon Meagher, Luk Rombauts, Karen Waalwyk, Michael Bethune, and Stephen Tong. Ultrasound Reference Chart Based On IVF Dates to Estimate Gestational Age At 6–9 Weeks' Gestation. International Scholarly Research Network, 2012.

Delpachitra, Pavitra, et al. Ultrasound Reference Chart Based On IVF Dates to Estimate Gestational Age At 6–9 Weeks' Gestation. International Scholarly Research Network, 2012.