function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Beier, Max', 74],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Cervena, Martina & Stahlavsky, Frantisek & Papac, Vladimir', 1],
    ['Chamberlin, Joseph Conrad', 8],
    ['Gardini, Giulio', 20],
    ['Guo, Xiangbo & Zhang, Feng', 2],
    ['Hadži, Jovan', 8],
    ['Hernández-Corral, Jesús & Zaragoza, Juan A. & Micó, Estefanía', 2],
    ['Judson, Mark L. I.', 2],
    ['Kolesnikov, Vasiliy B. & Christophoryova, Jana', 2],
    ['Morikawa, Kinichi', 3],
    ['Novák, János', 15],
    ['Novák, János & Dányi, László', 6],
    ['Vachon, Max', 3],
    ['Zaragoza, Juan A. & Pérez, Toni', 6],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=158)',
    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);