> 20 years after exposure. Why is this a problem? They have medical records in Iran. It is a developed country. > Done by a country with a huge reason to fin

> 20 years after exposure. Why is this a problem? They have medical records in Iran. It is a developed country. > Done by a country with a huge reason to find positive results What reason? This study was done long after the Iran Iraq war. > No mechanism for how exposure could result in genetic modification specific to pulmonary issues. Does every study have to explain a mechanism for cause?