Oh, I think I've found a picture of the set my sister would have had! Here's a link:
Playpeople Doctord and Nurses Superset 
I remember the nurses, the beds, the stretcher and the green and yellow patient. My sister is four years older than me so I guess a lot of this set had got lost by the time I got to play with it, as I don't remember any of the other pieces.
I remember switching the wigs of the green and yellow patient with one of the nurses, so she had ginger hair. I called this Klicky Janet. I only had one Playmobil figure of my own as a child, a green farmer who I'm afraid I called John Player (named after the cigarettes! the power of advertising

) and he was her boyfriend.