Monteith RS, Warren CW, Stanziola E, López Urzua R, Oberle MW. Use of maternal and child health services and immunization coverage in Panama and Guatemala. Bull Pan Am Health Organ. 1987;21(1):1-15.
Monteith RS, Warren CW, Stanziola E, López Urzua R, Oberle MW. Use of maternal and child health services and immunization coverage in Panama and Guatemala. Bull Pan Am Health Organ. 1987;21(1):1-15.