Representatives of the industry group alsosaid it can bechallenging to design, and enrollparticipants for, studiestesting medicines for children'scolds.
George Jugovic, president of the environmental group PennFuture, one of the participants, said the industry's involvement makes this different from past debates over fracking.
Representatives of the industry group also said it can be challenging to design, and enroll participants for, studies testing medicines for children's colds.