I can find plenty of evidence of the opposite to be true.
Before the 1966 law went into effect,
the Romanian maternal mortality rate was
similarto those ofother Eastern European
countries. Afterward, abortion-related
maternal mortality increased to a level 10
times that of any other European country
(Figures 2 and 3). For the decade 1980 to
1989, the average Romanian maternal
mortality rate was 150 maternal deaths per
100 000 live births.6 Many women obtained
abortion illegally, and every year
approximately 500 otherwise-healthy
women of childbearing age died from postabortion
hemorrhage, sepsis, abdominal
trauma, and poisoning.
P Stephenson, M Wagner, M Badea, and F Serbanescu. Commentary: the public health consequences of restricted induced abortion--lessons from Romania. American Journal of Public Health October 1992: Vol. 82, No. 10, pp. 1328-1331.
When abortion is made legal, safe, and easily accessible, women’s
health rapidly improves. By contrast, women’s health deteriorates
when access to safe abortion is made more difficult or illegal
David A Grimes, Janie Benson, Susheela Singh, Mariana Romero, Bela Ganatra, Friday E Okonofua,
Iqbal H Shah Unsafe abortion: the preventable
pandemic. The Lancet
Sexual and Reproductive Health Series, October 2006.
Illegal abortion is responsible for up to half of maternal deaths and consumes a large proportion of health resources in many developing countries, particularly in Africa and Latin America. The legal situation of abortion in a country does not influence the abortion rate, but illegality is associated with a much greater risk of complications and death.
Faúndes A, Hardy E. Illegal abortion: consequences for women's health and the health care system. Int J Gynaecol Obstet. 1997 Jul;58(1):77-83.
The article with regards to Chile might be this (unfortunately I can't find the body, and the abstract does not make the claims you mention):
Foro Red de Salud y Derechos Sexuales y Reproductivos; .Red Salud de las
Mujeres Latinoamericanas y del Caribe Humanized care of unsafe abortion in Chile: monitoring as practical women's citizenship: Santiago de Chile; Foro Red de Salud y Derechos Sexuales y ReproductivosChile; 2003. 26 p. tab.
But I've also found this peer-reviewed criticism (emphasis mine):
According to a 2001 Ministry of Health Quality of Life and Health Survey,12 in 1990 there were 44,468 hospitalisations for abortion (spontaneous and induced), while in 2001, there were 34,479, a decrease of 22%. While the author (Shepard) could not duplicate the full methodology of the original study, her estimates, using the same correction and multiplier factors, suggest that the total number of abortions may also have decreased by 22% in 2001, with a 9% decrease in the abortion rate in Chile.6 Both decreases occurred during a period in which the population of women of fertile age rose by 23%. This decrease in abortions of 22% is higher than the 16% decrease in births during the same period. These estimates should be taken with caution, since they are based on hospital data, and experts attribute the reduction of hospitalisation related to abortion to the increasing use of aseptic procedures and antibiotic therapy among clandestine abortion providers, the increasing availability of misoprostol and increased contraceptive use.
BL Shepard, L Casas Becerra Abortion Policies and Practices in Chile:
Ambiguities and Dilemmas. Reproductive Health Matters 2007;15(30):202–210