First off CONGRATULATIONS, 2 job offers not bad work hun!!!

Maybe you could say to the first clinic that the 2nd clinic offered to you first and that you are feeling compelled to take that position for that reason alone.??? Usually when you say "I have decided not to take the position..." they stop listening anyway to the excuse you give them.

Ultimately you need to do what is best for you and your family, from the outside looking in there is no comparison however I know it is a different story when it's actually you in the predicament (sp) The 2nd clinic sounds much more like somewhere you would want to take a member of your family (pets) too for medical care.

Good Luck !!!