Thanks so much for the information.
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A friend’s wife told me about a baby’s ears rupturing.
She couldn’t fly in a pressurized plane for 3 weeks, ISRC, after giving birth and she couldn’t allow her daughter to fly in a pressurized plane she remembered something like 6-8 weeks because it could rupture the ears.
That was about 17 years ago when she had her daughter, 1961 it would probably be a lot more restrictive.