Aristolochia serpentaria (Virginia snakeroot), Aristolochia reticulata (Texas snakeroot) and in Chinese herbs such as Aristolochia fangchi and Aristolochia mandshurensis (banned in China and withdrawn from Chinese Pharmacopoea 2005; Stephania tetrandra and Magnolia officinalis do not contain aristolochic acid).
age-based rationing. Age-Based Rationing. A proposed form of rationing publicly-funded health care services, in which limits would be placed on the type and amount of such services that would be freely available to persons above a certain age.
Caregiver-to-child ratios vary depending on age, and California prescribes specific ratios for adult-to-children and teacher-to-children ratios. A single teacher may be responsible for up to 12 preschool-aged children, though if an aide is also present, the number increases to 15 children.