ThePregnancy pocketwheelwas developed by Bruce Kovacs, MD, who works as a Professor of Clinical Obstetrics and Gynecology at the Keck School of Medicine at the University of Southern California. The wheel is based on current obstetrics patient visit guidelines and combines the information with a wheel calendar. The result is a pocket-sized tool which health care professionals can not only use to find the according clinical tests and evaluations, depending on the progress of the pregnancy, but also to calculate dates of future visits as well as the due date.