function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chopard, L.', 1],
    ['Desutter-Grandcolas, Laure & Anso, Jérémy & Jourdan, Hervé', 1],
    ['Gu, J. X. & Dai, L. & Huang, J. H.', 3],
    ['Hollier, John & Bruckner, Harald & Heads, Sam W.', 6],
    ['Jaiswara, Ranjana & Desutter-Grandcolas, Laure & Jain, Manjari', 4],
    ['Kim, Tae-Woo & Puskás, Gellért', 2],
    ['Liu, Yun-Fei & Shen, Chu-Ze & Xu, Yue & Chen, Guang-Yu', 2],
    ['Sultana, Riffat & Sanam, Surriya & Kumar, Santosh', 2],
    ['Tan, Ming Kai & Japir, Razy & Chung, Arthur Y. C.', 1],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1],
    ['Yang, C. & Wei, Z. - D. & Liu, T. & Liu, H. - Y.', 1],
    ['Yuan, Li-Lan & Xu, Fei & Wang, Xiao-Xiao & Zhang, Dong-Xiao', 1],
    ['Zhang, Ling & Shen, Chu-Ze & Tian, Di & Liu, Yun-Fei & Li, Kai', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);