I had a chance to read one of the links you posted. Before I answer your question I want to make it clear that this is just in response to the article I read. News articles are not evidence and they didn't provide any sources for the claims they made. At least the ones I read didn't. So this is all just based on the assumption that what they said was true (I have no idea if it is actually true that they hid evidence knowing it cased birth defects and continued to push doctors to use it for patients)
So *based on the assumption that what the news articles claim is fact* I would say yes, they hid evidence. 2. Yes, there actions directly and intentionally harmed children.