Translate the following English sentence to French:
"They were the first to say that, each day, they must think about doing what is most cost-effective because resources had to suffice for their poor patients there. We must be very careful about how we use resources."
Elles étaient les premières à dire que nous devions penser chaque jour à faire ce qui est le plus rentable, parce que cela doit suffire aux pauvres patients d'ici ; nous devons faire très attention à la manière dont nous utilisons les ressources.