function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ashmead, William Harris', 2],
    ['Blackburn, T. & Cameron, P.', 1],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 16],
    ['Dalman, Johan Wilhelm', 1],
    ['Fallahzadeh, Majid & Japoshvili, George', 3],
    ['Hayat, Mohammad & Zeya, Shahid Bin & Veenakumari, K.', 1],
    ['Japoshvili, George & Higashiura, Yoshimitsu & Kamitani, Satoshi', 3],
    ['Japoshvili, George & Soethof, Rudy', 1],
    ['Madl, Michael & H, Anicetus & H, Anthemus & W, Cheiloneurus', 4],
    ['Mayr, Gustav', 1],
    ['Mifsud, David & Askew, Richard R.', 1],
    ['Rudoy, Andrey & Zhu, Chao-Dong & Ferrari, Rafael R.', 2],
    ['Swezey, O. H.', 1],
    ['Timberlake, P. H.', 1],
    ['Walker, Francis', 28],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=67)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);