function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Chen, Guanyu & Xiao, Lifang & Liang, Junhui & Shih, Chungkun', 2],
    ['Gupta, Sunil Kumar & Chandra, Kailash', 21],
    ['Han, Wei & Qiu, Lu & Zhu, Jing & Wang, Zong-Qing & Che, Yan-Li', 9],
    ['Hollier, John & Marshall, Judith & Legendre, Frédéric', 30],
    ['Hopkins, Heidi', 49],
    ['Iglesias, Monica Sandra', 2],
    ['Pellens, Roseli & Grandcolas, Philippe', 9],
    ['Qiu, Lu & Che, Yan-Li & Wang, Zong-Qing', 51],
    ['Qiu, Lu & Che, Yang-Li & Wang, Zong-Qing', 29],
    ['Qiu, Lu & Che, Yanli & Wang, Zongqing', 2],
    ['Qiu, Lu & Wang, Zong-Qing & Che, Yan-Li', 3],
    ['Roth, Louis M.', 12],
    ['VIDLIČKA, ĽUBOMÍR', 5],
    ['Walker, Francis', 4],
    ['Other (13)', 17]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=247)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);