1990

• P, Morera and M, Conejo. (1990, ). Chronic Strongyloidosis: an underestimated problem Bull Soc Francaise Parasitologie VIII: 400. [More]
• L, Rosero-Bixby. (1990, ). Socioeconomic development, health interventions and mortality decline in Costa Rica Scan J Soc Med 46, 2: 33-42. [More]
• L, Rosero-Bixby, C, Grimaldo and C, Raabe. (1990, ). Monitoring a primary health care program with lot quality assurance sampling: Costa Rica, 1987 Health Policy and Planning 5, 1: 30-39. [More]
• L, Mata. "Breast-feeding, infections and infant outcomes: an international perspective". Newfoundland, Canadá : ARTS Biomedical, 1990. 1-23. [More]

1989

• W, Brenes. (1989, ). Epidemiología de la caries dental en poblaciones amerindias en transición sociocultural Vínculos 15: 45-57. [More]
• W, Brenes and A, León. (1989, ). Recursos humanos del sector salud de los cantones fronterizos en el Sur de Costa Rica Ciencias Sociales: 109-117. [More]
• L, Mata. (1989, ). Aspectos psicosociales en torno a las personas afectadas por el virus de la inmunodeficiencia humana (VIH) en Costa Rica Acta Med Costarric 33, 2: 62-68. [More]
• L, Mata. (1989, ). El Síndrome de la Inmuno Deficiencia Adquirida (SIDA) a mediados de 1989 Acta Med Costarric 33, 3: 91-100. [More]
• E, Brito Loureiro, A, Da Costa Linhares and L, Mata. (1989, ). Criptosporidiose em crian?as de 1 a 2 anos de idade, com diarréia ,aguda em belém, para Brasil Mem Inst Oswaldo Cruz 84, 1: 117-122 https://doi.org/https://doi.org/10.1590/S0074-02761989000100021. [More]
• T, Díaz and R, Achí. (1989, ). Infectious diseases in a Nicaraguan refugee camp in Costa Rica Trop Doct: 14-17. [More]
• N, Marrano, L, Mata and D, Durack. (1989, ). Cutaneous leishmaniasis in rural Costa Rica Trans R Soc Trop Med Hyg 83, 3: 340. [More]
• M, Oberle, L, Rosero-Bixby, F, Lee, M, Sánchez-Braverman, A, Nahmias and M, Guinan. (1989, ). Herpes simplex virus type 2 antibodies: high prevelence in monogamous women in Costa Rica Am J Trop Med Hyg 41, 2: 224-229. [More]
• L, Rosero-Bixby and M, Oberle. (1989, ). Fertility change in Costa Rica 1960-84: analysis of retrospective lifetime reproductive histories J Biosoc Sci 21, 4: 419-432 https://doi.org/https://doi.org/10.1017/s0021932000018150. [More]
• R, Barrantes. (1989, ). Biodemografía de las poblaciones amerindias de Costa Rica Vínculos: 59-68. [More]
• N, Handal and R, Barrantes. (1989, ). Esquizofrenia y estructura genética de la población de Costa Rica Acta Med Costarric: 108-112. [More]
• C, De Céspedes, JG, Thoene, K, Lowler and HN, Christensen. (1989, ). Evidence for inhibition of exodus of small neutral amino acids from non-brain tissues in hyperphenylalaninaemic rats J Inher Metab Dis 12, 2: 166-180 https://doi.org/https://doi.org/10.1007/BF01800722. [More]
• NM, Marrano, L, Mata and DT, Durack. (1989, ). Cutaneous leishmaniasis in rural Costa Rica Transactions of the Royal Society of Tropical Medicine and Hygiene 83, 3: 340 https://doi.org/10.1016 / 0035-9203 (89) 90496-3. [More]
• R, Sierra and R, Barrantes. (1989, ). Epidemiology of cancer of the uterine cervix in Costa Rica, 1980-1983 Bulletin of PAHO 23, 4: 431-437. [More]
• R, Sierra, DM, Parkin and G, Muñoz-Leiva. (1989, ). Cancer in Costa Rica Cancer Research: 717-724. [More]
• M, Oberle, D, Sosa, J, Madrigal-Pana, S, Becker, L, Morris and L, Rosero-Bixby. (1989, ). Fecundidad y uso de anticonceptivo en Costa Rica, 1987 Perspectivas Internacionales en Planificación Familiar: 16-21. [More]
• I, Brulez. . Holanda : Department of Human Nutrition, Agricultural University Wageningen, 1989. [More]
• G, Ramírez, L, Braathen, R, Kunze and H, Gelderblom. (1989, ). I}n vitro: infection of human epidermal Langerhans cells with {HIV Adv Exp Med Biol: 901-905. [More]
• J, Shifter-Sikora. . San José, C.R : Guayacán, 1989. [More]

1988

• L, Mata. (1988, ). Diarrhoea and AIDS Dialogue on Diarrhoea 53: 3. [More]
• G, Herrera. (1988, ). SIDA de transmisión sexual en Costa Rica: aspectos epidemiológicos y clínicos Rev Cost Cienc Med 9, 3: 15-20. [More]