1.
Rev. mex. pediatr
; 62(2): 71-4, mar.-abr. 1995.
Article
in Spanish
| LILACS
| ID: lil-151378
2.
Arch. pediatr. Urug
; 59(4): 263-73, oct-dic.1988.
Article
in Spanish
| LILACS
| ID: lil-111478
3.
Quito; Facultad de Ciencias Médicas. Universidad Central del Ecuador; s.n; 1985. 263 p.
Monography
in Spanish
| LILACS
| ID: lil-354229