function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Belokobylskij, S. A.', 4],
    ['Belokobylskij, Sergey A.', 1],
    ['Belokobylskij, Sergey A. & Achterberg, Cornelis Van', 3],
    ['Belokobylskij, Sergey A. & Ku, Deokseo', 3],
    ['Edmardash, Yusuf A. & El-Ghiet, Usama M. Abu & Soliman, Ahmed M.', 2],
    ['Gutierrez-Arellano, Daniela & Gutierrez-Arellano, Claudia Renata', 2],
    ['Marsh, Paul M. & Wild, Alexander L. & Whitfield, James B.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);