function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Choi, Jung-Hye & Cha, Ju-Hee & Bae, Jin-Woo & Cho, Jang-Cheon', 7],
    ['Kim, Mi-Sun & Jeong, Seong-Hwa & Kang, Joo-Won & Kim, Seung-Bum', 4],
    ['Lee, Jae-Yun & Jeong, Yun-Seok & Kim, Pil Soo', 2],
    ['Mei, Lijuan & Piao, Zhe & Hu, Jian & Shi, Linlin & Bai, Yanchao', 1],
    ['Pei, Shengxiang & Xie, Fuquan & Wang, Wenjing & Zhang, Shuang', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);