TY - GEN AU - Jennison,K AU - Ellis,R P TI - A comparison of psychiatric service utilization in a single group practice under multiple insurance systems SN - 0731-2199 PY - 1989///0424 KW - Adolescent KW - Adult KW - Aged KW - Blue Cross Blue Shield Insurance Plans KW - statistics & numerical data KW - Child KW - Child, Preschool KW - Cost Control KW - Demography KW - Female KW - Group Practice KW - Group Practice, Prepaid KW - Health Maintenance Organizations KW - economics KW - Humans KW - Infant KW - Insurance, Psychiatric KW - Male KW - Massachusetts KW - Mental Health Services KW - Middle Aged N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't ER -