function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Coquillett, Daniel William', 1],
    ['Dong, Ruiqing & Li, Junjian & Yang, Hui & Zhang, Chuntian', 1],
    ['Ghahari, H. & Hayat, R. & Tabari, M. & Ostovan, H. & Imani, S.', 1],
    ['Meigen, Johann Wilhelm', 2],
    ['Nihei, Silvio S.', 23],
    ['Panzer, Georg Wolfgang Franz', 1],
    ['Pohjoismaeki, Jaakko & Bergstroem, Christer', 1],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 10],
    ['Waltl, Joseph', 2],
    ['Zhang, Dong & Zhang, Ming & Wang, Chao & Pape, Thomas', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);