function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bartolozzi, Luca & Ghahari, Hassan & Sprecher-Uebersax, Eva', 3],
    ['Bezděk, Aleš & Boucher, Stéphane & Hájek, Jiří', 2],
    ['Freese, Edwin L. & Veal, Doug A. & Lago, Paul K.', 3],
    ['Gasca-Álvarez, Héctor Jaime & Deloya, Cuauhtémoc', 1],
    ['Huang, Hao & He, Yang & Shi, Zheng', 3],
    ['Kurosawa, Yoshihiko', 1],
    ['Qi, Zhi-Hao & He, Hao & Su, Rong-Xiang & Ai, Hong-Mu', 6],
    ['Wang, C. - B. & He, T. - L. & He, L. & Zhou, C.', 2],
    ['Wang, Cheng-Bin & Zhan, Bi-Sheng', 1],
    ['Wang, Cheng-Bin & Zhu, Xiang', 1],
    ['Weber, Friedrich', 2],
    ['Westwood, John Obadiah', 1],
    ['Zhan, Zhihong & Young, Daniel K.', 35],
    ['Zhou, Li Yang & Zhan, Zhi Hong & Zhu, Xue Li & Wan, Xia', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=63)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);