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2. - Fatores del risco gravídico;BERTOLA R.P.;Obst. Ginec. lat. amer.,1971
3. - Toxemia of pregnancy in Jerusalem 1: Epidemiological studies of a total community;DAVIES A.M.;Israel J. Med. Sci.,1970
4. - Management of hightrisk pregnancy: report of a combined obstetrical and neo-natal intensive care unit;EFFER S.B.;Canad. med. Ass. J.,1969
5. - Total maternal and infant care: a realistic appraisal;GOLD E. M.,1968