function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Araújo, Diogo & Alves, Marccus', 1],
    ['Blume, Carl Ludwig von', 1],
    ['Danser, Benedictus Hubertus', 1],
    ['Essl, F. & Stöhr, O.', 3],
    ['Grady, Ben R. & Reveal, James L.', 1],
    ['Jarvis, Charlie', 76],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 2],
    ['Li, Bo & Fan, Dengmei & Lei, Shuqing & Zhang, Zhiyong', 4],
    ['Linnaeus, Carolus', 54],
    ['Ortiz-Díaz, Juan Javier & Arnelas, Itziar & Tun, Juan', 2],
    ['Pulle, August Adriaan', 1],
    ['Rai, Ishwari Datt & Singh, Gajendra & Rawat, Gopal Singh', 3],
    ['Rigo, Attila & Malatinszky, Akos & Barina, Zoltan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=150)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);