Don Rafael Obregón Loría (1911-2000).

El diagnóstico prenatal de trastornos genéticos

The evolution of diarrhoeal diseases and malnutrition in Costa Rica: The role of interventions

Canasta básica del costarricense, 1980

Consumo de drogas ilícitas por hombres homosexuales o bisexuales de Costa Rica, 1985-1986

Hair zinc levels in rural Costa Rican infants and preschool children

Breast-feeding, infections and infant outcomes: an international perspective

Proyección del Síndrome de Inmunodeficiencia Adquirida (SIDA) en Costa Rica para el quinquenio 1988-1992

Cutaneous leishmaniasis in rural Costa Rica (Short report)

Criptosporidiosis in children from some highland costa rican rural and urban areas

Nutritional consequences of infection

Estudios evolutivos y biomédicos en dos poblaciones indígenas Guaymies de Costa Rica

Erradicación de helmintos intestinales en Costa Rica

Natural history of Giardia infection of infants and children in rural Guatemala and its impact on physical growth

Distribution of serotypes of human rotavirus in different populations

Umbilical Cord Immunoglobulins and Fetal Maturity: Neonates in a Guatemalan Indian Village

Consumo de leche por lactantes del área rural de Puriscal, Costa Rica, 1978

Epidemiology of rotaviruses in a cohort of 45 Guatemalan Mayan Indian children observed from birth to the age of three years

Conocimientos sobre el SIDA en un tugurio y un campamento de refugiados de Costa Rica

Tratamientos bactericidas poscosecha contra Vibrio cholerae en lechuga (Lactuca sativa)