function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahrens, Dirk', 89],
    ['Ahrens, Dirk & Fabrizi, Silvia', 59],
    ['Ahrens, Dirk & Fabrizi, Silvia & Bai, Ming & Liu, Wangang', 63],
    ['Ahrens, Dirk & Liu, Wangang & Lukic, Daniel & Bai, Ming', 99],
    ['Ahrens, Dirk & Liu, Wangang & Pham, Phu Van & Fabrizi, Silvia', 49],
    ['Allsopp, Peter G.', 70],
    ['Bezděk, Aleš & Hájek, Jiří & Ascr, Biology Centre', 105],
    ['Chandra, Kailash & Ahrens, Dirk & Bhunia, Debika', 75],
    ['Fabrizi, Silvia & Dalstein, Vivian & Ahrens, Dirk', 122],
    ['Fabrizi, Silvia & Liu, Wan-Gang & Bai, Ming & Yang, Xing-Ke', 254],
    ['Freese, Edwin L. & Veal, Doug A. & Lago, Paul K.', 60],
    ['Gao, Chuan-bu & Coca-Abia, María Milagro', 60],
    ['Hielkema, Auke J. & Hielkema, Meindert A.', 61],
    ['Pérez-Hernández, Cisteil Xinum', 42],
    ['Smith, Andrew B. T.', 72],
    ['Other (130)', 933]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=2213)',
    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);