Which states laws apply can be a whole legal question within itself especially in cases like this in which there may be dispute over where and when the injury actually occurred. Proving that your injuries or those of your children were caused by DES would have to be accomplished through expert testimony and other scientific sources and I am not qualified to answer the medical and statistical questions that you ask regarding the incidence or cause of adenosis. Based on the medical and scientific evidence relied upon in those cases, I think you would have a good chance of proving that at least the alleged injuries of adenosis and hooded cervix and associated sequelae were caused by the DES exposure. The next question is, even if you can prove the required elements and win the case, will the damages award be worth the time, effort, and money getting there. An attorney may not be willing to take the case in the first place unless the damages are likely to be enough to cover the expenses and costs of litigation, reimburse the attorney for the time spent on the case, and leave something to compensate you, the plaintiff, for the injuries - which is the whole purpose of the suit.
Attorneys commonly take such tort cases on contingency.
Win or lose, however, the plaintiff is responsible for the expenses - which commonly soar into the tens of thousands of dollars for discovery such as depositions of opposing experts as well as paying the fees and expenses of the plaintiff's own expert witnesses, etc. As you can guess, plaintiffs are often less than willing to pay these expenses if they do not win. This is probably one reason that drug manufacturers may not offer a reasonable settlement in cases of adenosis and other DES associated problems because those problems do not bring in the jury awards that infertility or cancer might elicit. First, try to find an attorney who has represented plaintiffs in DES suits in your state and ask him or her to consider your case or to refer you to an attorney who has handled such cases and who might be willing to take the case. If you cannot find an attorney in your state, then try other states, particularly those in which the manufacturers are located.