function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Behan-Pelletier, Valerie M. & Lindo, Zoë', 5],
    ['Bolger, Thomas', 1],
    ['Ermilov, Sergey G. & Stary, Josef & Block, William', 6],
    ['Hugo-Coetzee K, Elizabeth A. & K, Julia Baumann', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 1],
    ['Luxton, Malcolm', 1],
    ['Murvanidze, Maka & Todria, Nino & Maraun, Mark & Mumladze, Levan', 1],
    ['Norton, Roy A. & Ermilov, Sergey G.', 10],
    ['Norton, Roy A. & Franklin, Elizabeth', 6],
    ['Pfingstl, Tobias & Hiruta, Shimpei F. & Bardel-Kahr, Iris', 1],
    ['Pfingstl, Tobias & Hiruta, Shimpei F. & Nemoto, Takamasa', 2],
    ['Weigmann, G. & Miko, L.', 7],
    ['Willmann, C.', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    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);