function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bezděk, Aleš & Hájek, Jiří', 146],
    ['Boucomont, Antoine', 25],
    ['Cambefort, Yves & Bordat, Patrice', 47],
    ['Chamorro, William & Marin-Armijos, Diego & senjo, Angelico', 27],
    ['Cheung, Kahong & Bai, Ming & Leung, Manhin & Lee, Yingming', 36],
    ['Freese, Edwin L. & Veal, Doug A. & Lago, Paul K.', 8],
    ['Hielkema, Auke J. & Hielkema, Meindert A.', 12],
    ['Höglinger, Marc & Huber, Andrea & Eichler, Klaus', 8],
    ['Joaqui, Tatiana & Moctezuma, Victor & Sánchez-Huerta, José Luis', 10],
    ['Kharel, Bhim Prasad & Schoolmeester, Paul', 200],
    ['Krikken, J. & Huijbregts, J.', 32],
    ['Pérez-Hernández, Cisteil Xinum', 8],
    ['Strümpher, Gimo M. Daniel Werner P. & Josso, Jean-François', 46],
    ['Ziani, Stefano & Abdel-Dayem, Mahmoud Saleh', 28],
    ['Ziani, Stefano & Bezděk, Aleš & Branco, Tristão', 20],
    ['Other (63)', 136]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=789)',
    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);