function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Azari-Hamidian, Shahyad & Harbach, Ralf E.', 2],
    ['Dawah, Hassan A. & Abdullah, Mohammed A. & Ahmad, Syed Kamran', 3],
    ['Felt, Ephraim Porter', 1],
    ['Giłka, Wojciech & Harbach, Ralph E. & Perkovsky, Evgeny E.', 2],
    ['Harbach, Ralph E. & Greenwalt, Dale', 2],
    ['Harbach, Ralph E. & Wilkerson, Richard C.', 3],
    ['Khalin, A. V. & Aibulatov, S. V.', 6],
    ['Kirik, Heli & Tummeleht, Lea & Kurina, Olavi', 6],
    ['Merabti, B. & Boumaza, M. & Ouakid, M. L.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);