[1] Hall, G. and Patrinos, H. (2005) Indigenous peoples, poverty and human development in Latin America: 1994-2004. http://go.worldbank.org/TXWP6Y78N0
[2] Malinowski, B. (1995) Argonauts of the Western Pacific: An account of native enterprise and adventure on the Archipelagoes of Melanesian New Guinea. Ediciones Peninsula, Barcelona.
[3] Amezcua, M. (2000) The fieldwork in health. One approach to participant observation. Index Confrontations (Grand), 30, 30-35.
[4] Taylor, S.J. and Bogdan, R. (1990) Introduction to qualitative research methods. Paidós, Buenos Aires.
[5] Kawulich, B.B. (2005) Participant observation as data collection method. Forum: Qualitative Social Research, 6 Art. 43.
[6] Gil Flores, J. (1993) Research methodology by discussion groups. Inter-University Teaching Yearbook, No. 10-11. 199-214.
[7] Ibanez, J. (1981) Uses and abuses topical of group techniques. Journal of the Spanish Association of Neuropsychiatry, 2, 16-36.
[8] Tesch, R. (1990) Qualitative research: Analysis types and software tools. Falmer, New York.
[9] Creswell, J.W. (1998) Qualitative inquiry and research design: Choosing among five traditions. Sage Publications, Inc., Thousand Oaks.
[10] Sparkes, A.C. (1992) The paradigms debate: An extended review and a celebration of difference. In: Sparkes, A.C. Ed., Research in Physical Education and Sport. Exploring Alternative Visions, The Falmer Press, Lewes, 9-60.
[11] Mercado Martínez, F.J., Villase?or Farías, M. L. and Gómez, A. (2000) Current status of qualitative health research. Revista Universidad de Guadalajara. Número 17/Invierno Magazine 1999-2000. http://www.cge.udg.mx/revistaudg/rug17/entrada.html
[12] Morse, J.M., Barrett, M., Mayan, M., Olson, K. and Spiers, J. (2002) Verification strategies for establishing reliability and validity in qualitative research. International Journal of Qualitative Methods, 1, 1-19. http://www.ualberta.ca/~ijqm/
[13] Denzin, N.K. and Lincoln, Y.S. (1994) Handbook of qualitative research. Sage Publications, Inc., Thousand Oaks.
[14] Guba, E.G. and Lincoln, Y.S. (1994) Competing paradigms in qualitative research. In: Denzin, N.K. and Lincoln, Y.S., Eds., Handbook of Qualitative Research, Sage Publications, Inc., Thousand Oaks,105-117.
[15] Calderón, C. (2002) Quality criteria in qualitative health research: Notes for a necessary debate. Revista Espa?ola de Salud Pública, 76, 473-482.
[16] Ulin, P.R. (2006) Applied public health research: Qualitative methods. Pan American Health Organization, Washi
[17] Hall, G. and Patrinos, H. (2005) Indigenous peoples, poverty and human development in Latin America: 1994-2004. http://go.worldbank.org/TXWP6Y78N0
[18] Malinowski, B. (1995) Argonauts of the Western Pacific: An account of native enterprise and adventure on the Archipelagoes of Melanesian New Guinea. Ediciones Peninsula, Barcelona.
[19] Amezcua, M. (2000) The fieldwork in health. One approach to participant observation. Index Confrontations (Grand), 30, 30-35.
[20] Taylor, S.J. and Bogdan, R. (1990) Introduction to qualitative research methods. Paidós, Buenos Aires.
[21] Kawulich, B.B. (2005) Participant observation as data collection method. Forum: Qualitative Social Research, 6 Art. 43.
[22] Gil Flores, J. (1993) Research methodology by discussion groups. Inter-University Teaching Yearbook, No. 10-11. 199-214.
[23] Ibanez, J. (1981) Uses and abuses topical of group techniques. Journal of the Spanish Association of Neuropsychiatry, 2, 16-36.
[24] Tesch, R. (1990) Qualitative research: Analysis types and software tools. Falmer, New York.
[25] Creswell, J.W. (1998) Qualitative inquiry and research design: Choosing among five traditions. Sage Publications, Inc., Thousand Oaks.
[26] Sparkes, A.C. (1992) The paradigms debate: An extended review and a celebration of difference. In: Sparkes, A.C. Ed., Research in Physical Education and Sport. Exploring Alternative Visions, The Falmer Press, Lewes, 9-60.
[27] Mercado Martínez, F.J., Villase?or Farías, M. L. and Gómez, A. (2000) Current status of qualitative health research. Revista Universidad de Guadalajara. Número 17/Invierno Magazine 1999-2000. http://www.cge.udg.mx/revistaudg/rug17/entrada.html
[28] Morse, J.M., Barrett, M., Mayan, M., Olson, K. and Spiers, J. (2002) Verification strategies for establishing reliability and validity in qualitative research. International Journal of Qualitative Methods, 1, 1-19. http://www.ualberta.ca/~ijqm/
[29] Denzin, N.K. and Lincoln, Y.S. (1994) Handbook of qualitative research. Sage Publications, Inc., Thousand Oaks.
[30] Guba, E.G. and Lincoln, Y.S. (1994) Competing paradigms in qualitative research. In: Denzin, N.K. and Lincoln, Y.S., Eds., Handbook of Qualitative Research, Sage Publications, Inc., Thousand Oaks,105-117.
[31] Calderón, C. (2002) Quality criteria in qualitative health research: Notes for a necessary debate. Revista Espa?ola de Salud Pública, 76, 473-482.
[32] Ulin, P.R. (2006) Applied public health research: Qualitative methods. Pan American Health Organization, Washi