function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Caleb, John T. D. & Pravalikha, G. B.', 2],
    ['Dankittipakul, Pakawin & Singtripop, Tippawan', 7],
    ['Dejean, Pierre François Marie Auguste', 1],
    ['Evenhuis, Neal L. & O’Hara, James E. & Pape, Thomas', 1],
    ['Javed, Maqsood & Foord, Stefan H. & Tampal, Farida', 2],
    ['Jäger, Peter', 2],
    ['Lin, Yejie & Li, Shuqiang', 7],
    ['Mirshamsi, Omid & Zamani, Alireza & Marusik, Yuri M.', 2],
    ['Pakawin Dankittipakul & Tippawan Singtripop', 7],
    ['Pravalikha, G. B. & Srinivasulu, Chelmala', 1],
    ['Tanikawa, Akio', 2],
    ['ZONSTEIN, SERGEI & MARUSIK, YURI M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    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);