Michelsen, who spoke to reporters Sunday, refused to take questions about the case.

CNN: Surrogate mother sues California couple

Michelsen Institute conducted a survey of microcredit clients in Luanda.

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Theresa Erickson, the attorney for Beasley, disputed Michelsen's claim that another couple stands ready to assume responsibility for Beasley's pregnancy and the children, saying money has proved to be a stumbling block.

CNN: Surrogate mother sues California couple