function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bhandari, Prabin & Chaudhary, Satyam & Neupane, Ajay', 1],
    ['Boeckeler, Johann Otto', 1],
    ['Clarke, Charles Baron', 1],
    ['Fosberg, Francis Raymond', 1],
    ['Jarvis, Charlie', 5],
    ['Kern, Friedrich', 2],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 5],
    ['Oliveira, Adriana & Bove, Claudia', 6],
    ['Ramella, Lorenzo & Perret, Patrick', 2],
    ['Rasaminirina, Fitiavana & Larridon, Isabel', 1],
    ['Schneider, Layla Jamylle Costa & Simões, André Olmos', 7],
    ['Silva, Caio Lima Braga da & Nunes, Clebiana de Sá', 10],
    ['Steudel, Ernst Gottlieb von', 2],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 20],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=65)',
    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);