function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hu, Dong-Sheng & Zhang, Feng', 1],
    ['Li, Wenhui & Li, Congzheng & Yao, Yanbin & Liu, Keke', 1],
    ['Lin, Yejie & Li, Shuqiang & Pham, Dinh-Sac', 2],
    ['Liu, Ke-Ke & Ying, Yuan-hao & Fomichev, Alexander A.', 2],
    ['Tang, Guo & Li, Shuqiang', 6],
    ['Tang, Guo & Yin, Chang-Ming & Peng, Xian-Jin & Ubick, Darrell', 26],
    ['Wang, Cheng & Gan, Jiahui & Mi, Xiaoqi', 2],
    ['Zhang, Rui & Zhang, Feng', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=42)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);