function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barton, O.', 1],
    ['Katayama, M. & Amaoka, Kunio', 1],
    ['Kon, T. & Yoshino, Tetsuo & Sakurai, Y.', 1],
    ['Pellegrin, J.', 1],
    ['Randall, John Ernest Dr. & Maugé, Louis André & Plessis, Yves B.', 1],
    ['Talwar, P. K.', 1],
    ['William D. Anderson, Jr.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    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);