function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ashmead, William Harris', 1],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 2],
    ['Fallahzadeh, Majid & Japoshvili, George', 2],
    ['Japoshvili, George', 1],
    ['Japoshvili, George & Higashiura, Yoshimitsu & Kamitani, Satoshi', 9],
    ['Japoshvili, George & Soethof, Rudy', 2],
    ['Noyes, John Stuart', 6],
    ['Samin, Najmeh & A, Vladimir & A, Sergei & Sakenin, Hamid', 1],
    ['Suh, Soo-Jung', 1],
    ['Swezey, O. H.', 1],
    ['Zhang, Yan-Zhou & Shi, Zhen-Ya', 13],
    ['Zuparko, Robert L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);