function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Batelka, Jan & Hájek, Jiří', 10],
    ['Bologna, Marco A. & Amore, Valentina & Pitzalis, Monica', 2],
    ['Bologna, Marco A. & Turco, Federica', 1],
    ['Campos-Soldini, María Paula & Roig-Juñent, Sergio Alberto', 12],
    ['Dejean, Pierre François Marie Auguste', 1],
    ['Johnston, M. Andrew & Waite, Evan S. & Wright, Ethan R', 4],
    ['Pan, Zhao & Ren, Guo-Dong', 3],
    ['Pan, Zhao & Ren, Guodong', 5],
    ['Pinto, John D.', 1],
    ['Pérez-Hernández, Cisteil Xinum', 5],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 1],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=46)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);