In late 2005, Chang successfully treated David, a 45-year-old American working as a missionary in Taiwan. David suffered from an S-shaped spine for over 30 years, and as middle age came on his pain worsened.
2005 年底，張國華成功治療來台傳教多年的 45 歲美籍牧師 David，罹患 S 型側彎三十多年的他，步入中年後，腰痛加劇，前來求治。