It has recently been used to estimate the demand for primary health care (Puffer 1987; Winter, 1986).
An econometric analysis of the demand for private health insurance in England and Wales (Carol Propper)
I wish my surname was Puffer. You know you can trust health care demand research done by someone with a sweet name like Puffer.
There seem to be so many academics with cute surnames. Even Propper is a cute name. Winter isn't so cute, but it is certainly pleasant. I could well imagine getting a solid primary crush on a teacher called Miss Winter.