function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abu-Dannoun, Omar & Katbeh-Bader, Ahmad', 1],
    ['Brock, Paul D. & Marshall, Judith A. & Beccaloni, George W.', 2],
    ['Fabricius, Johann Christian', 1],
    ['Ghahari, H. & Hayat, R. & Tabari, M. & Ostovan, H. & Imani, S.', 1],
    ['Ghahari, H. & M. G & R, Blepharopsis & C, Empusa', 1],
    ['Greyvenstein, Bianca & van den Berg, Johnnie', 1],
    ['Marabuto, Eduardo', 2],
    ['Mohammad, Salwa Kamal & Alla, Sohair Mohammad Gad', 2],
    ['Pfäuti, Patrice & Hollier, John', 2],
    ['Schwarz, Christian J. & Pohl, Marius & Frank, Erik T.', 2],
    ['Serville, Audinet J. G.', 1],
    ['Svenson, Gavin J.', 2],
    ['Temreshev, Izbasar I. & Makezhanov, Arman M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    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);