What type of details about friedrich ostermann can be gathered from the following bio? Bio: friedrich ostermann -lrb- born 21 june 1932 at munster , germany -rrb- is a retired auxiliary bishop of the roman catholic diocese of munster . ostermann was ordained on 11 february 1958 . after an initial temporary appointment in bockum-hovel he became a chaplain in emsdetten , and then a parish priest in rheine -lrb- sacred heart -rrb- in 1969 and in 1975 a dean in the office of the rhine deanery . pope john paul ii appointed him as titular bishop of dolia and auxiliary bishop of munster -lrb- suffragan bishop of warendorf in the diocese of munster -rrb- . on 13 september 1981 , ostermann was ordained as a bishop by bishop dr. reinhard lettmann ; co-consecrators were hermann josef spital -lrb- bishop of trier -rrb- , and alfons demming -lrb- auxiliary bishop of munster -rrb- . in 1981 ostermann was appointed a canon residentiary of munster cathedral and head of the agency of missions , development and freedom of the bishops ' general vicarage at munster . since 2003 he has been the dean of the cathedral of st paul in munster . from 2001 - 2006 , ostermann was the chairman of the journalism commission of the german bishops ' conference . on his 75th birthday he tendered his resignation to pope benedict xvi on 21 june 2007 which was accepted on 18 july that year .
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