An existing service where women receive mobile phone text messages to alert them ahead of their ovulation period, so they can make love during that time, is showing signs of success.
Wei said he had received e-mails from some of the women saying they were already pregnant.
The doctor said a government program giving cash incentives to encourage couples to have more children was inadequate.
"Not everything can be addressed by a national kind of policy-making ... money does not solve everything," he said.
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