[Nota 41] [<--]

Frenk, J., J. Alag�n, G. Nigenda, A. Mu�oz-del R�o, C. Robledo, L. A. V�squez-Segovia y C. Ram�rez-Cuadra. "Patterns of Medical Employment: A Survey of Imbalances in Urban Mexico". American Journal of Public Health, 1991; 81: 23-29.

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