function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boonzaaier-Davids, Melissa K. & Florence, Wayne K.', 1],
    ['Dick, Matthew H. & Grischenko, Andrei V. & Mawatari, Shunsuke F.', 1],
    ['Louis, Soja', 3],
    ['Martino, Emanuela Di & Taylor, Paul D.', 4],
    ['Mead, A. & Carlton, J. T. & Griffiths, C. L. & Rius, M.', 1],
    ['Taylor, Paul D. & Tan, Shau-Hwai Aileen', 5],
    ['Vieira, Leandro M. & Almeida, Ana C. S. & Winston, Judith E.', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    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);