Hm..... There&#x27;s only two studies in Cambodia, though. One of them apparently had a faillure rate of about 17%, which makes me think the other study had a failure rate of about 5%, to get a median of ~12% seen in the graph. Couldn&#x27;t the high failure rate in Cambodia just be an artifact of an outlier study? Nearby Laos also has a low failure rate. Unfortunately, I don&#x27;t see Thailand on the list, which would be another nearby country to compare with...