function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ashmead, William Harris', 1],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 4],
    ['Fallahzadeh, Majid & Japoshvili, George', 1],
    ['Hayat, Mohammad & Ahmad, Zubair & Khan, Farmanur Rehman', 1],
    ['Japoshvili, George & Higashiura, Yoshimitsu & Kamitani, Satoshi', 2],
    ['Japoshvili, George & Soethof, Rudy', 1],
    ['Suh, Soo-Jung', 1],
    ['Wang, Haiyang & Zhang, Chenghui & Xue, Hao & Xi, Chunxiang', 1],
    ['Zuparko, Robert L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);