sentences:  He earned 18 international caps for Sweden.Grönhagen started his management career in GIF Sundsvall from 1986 to 89, before coaching IFK Sundsvall from 1990 to 92, Djurgårdens IF from 1994 to 96, GIF Sundsvall from 1999 to 2001.In 2002, he took over IF Elfsborg.