lastehaigusi, ka laste anatoomilisi, füsioloogilisi ja hügieeni iseärasusi käsitlev arstiteaduse haru, lastehaigusi käsitlev arstiteaduse haru, a branch of medicine dealing with the development, care, and diseases of infants, children, and adolescents, the medical specialty concerned with the study and treatment of children in health and disease during development from birth through adolescence