3 ms·
As the article says, the cause is not certain. From some study, higher c-section rate correlates with higher income, so my guess is that it could just be an out
by nemonemo 8y ago
As the article says, the cause is not certain. From some study, higher c-section rate correlates with higher income, so my guess is that it could just be an outcome of better hygiene according to the hygiene theory.