function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Evenhuis, Neal L. & Pape, Thomas', 1],
    ['González, Christian R. & Elgueta, Mario & Krolow, Tiago K.', 2],
    ['Goodwin, James T.', 2],
    ['Goodwin, James. T.', 1],
    ['Ivkovic, Marija & Doric, Valentina & Baranov, Viktor', 2],
    ['Loew, Hermann', 3],
    ['Maity, Aniruddha & Naskar, Atanu & Homechaudhuri, Sumit', 3],
    ['Meigen, Johann Wilhelm', 6],
    ['Mugasa, Claire M. & Villinger, Jandouwe & Gitau, Joseph', 2],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 5],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Veroy, Katerin & Orozco, Jesus & Henriques, Augusto L.', 1],
    ['Waltl, Joseph', 1],
    ['Wolff, Marta & Miranda-Esquivel, Daniel Rafael', 11],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=42)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);