We are still collecting memories of SIOP over the years. Join the #SIOPat50 Photo Contest for a chance to win a FREE Registration to #SIOP2018.

1. Share a picture from a past SIOP experience and the story behind it on either Facebook or Twitter

2. Post/Tweet your photo using the #SIOPat50 and #SIOP2018 hashtags

3. Photos can include individuals or groups

4. You can post as many photos as you like. Only one photo will be selected.

Let’s build the SIOP 50th anniversary photo album together!

Join the contest by Thursday, September 6, 12:00 CEST.