The study authors noted that most previous studies on nausea and pregnancy loss were not able to obtain such detailed information on symptoms in these early weeks of pregnancy. (sciencedaily.com)
«Most previous studies of memory were based on analyzing how damage to certain brain areas affects memory,» he said. (seeker.com)
That contrasts with most previous studies, which conclude that we only reached this level of transformation about 100 years ago. (newscientist.com)