function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 1],
    ['Kurzweil, Hubert', 19],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 1],
    ['Ormerod, Paul & Kurzweil, Hubert & Watthana, Santi', 26],
    ['Pignal, Marc & Laudereau, Christian & Laudereau, Pierre-Louis', 11],
    ['Vega, Hermes & Cetzal-Ix, William & Mó, Edgar', 1],
    ['Yang, Bo-Yun & Luo, Huo-Lin & Huang, Wei-Chang & Xiong, Dong-Jin', 1],
    ['Zhai, Jun-Wen & Chen, Li-Jun & Xing, Fu-Wu & Liu, Zhong-Jian', 2],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=63)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);