degree indication mild spontaneous mild spontaneous mild spontaneous mild spontaneous mild iatrogenic mild spontaneous moderate spontaneous moderate iatrogenic extreme iatrogenic mild spontaneous moderate iatrogenic mild spontaneous extreme pprom extreme iatrogenic mild iatrogenic mild iatrogenic extreme spontaneous extreme pprom mild spontaneous mild iatrogenic extreme pprom mild pprom moderate pprom mild spontaneous mild spontaneous mild iatrogenic moderate iatrogenic extreme pprom moderate pprom mild spontaneous moderate spontaneous mild spontaneous extreme iatrogenic extreme pprom mild iatrogenic mild iatrogenic moderate spontaneous mild spontaneous mild pprom mild spontaneous mild spontaneous extreme pprom mild spontaneous moderate pprom mild spontaneous mild spontaneous mild spontaneous moderate spontaneous moderate pprom mild iatrogenic mild spontaneous mild spontaneous mild spontaneous extreme pprom mild spontaneous mild spontaneous mild spontaneous extreme spontaneous mild spontaneous mild iatrogenic mild pprom moderate spontaneous moderate pprom mild spontaneous mild spontaneous mild iatrogenic moderate spontaneous extreme pprom mild spontaneous mild spontaneous mild iatrogenic mild pprom mild spontaneous extreme pprom mild spontaneous mild iatrogenic mild spontaneous moderate iatrogenic mild iatrogenic extreme pprom moderate pprom extreme pprom mild spontaneous extreme pprom mild spontaneous mild spontaneous mild spontaneous mild spontaneous extreme pprom mild spontaneous moderate iatrogenic extreme pprom extreme pprom moderate iatrogenic extreme spontaneous mild spontaneous mild spontaneous moderate pprom mild spontaneous mild iatrogenic