function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cao, Hua', 1],
    ['Dollfus, R. P.', 1],
    ['Fujita, Tsunenobu', 1],
    ['Loos-Frank, Brigitte', 2],
    ['Manter, Harold W.', 1],
    ['Odhner, T.', 1],
    ['Oliva Moreno, M.', 1],
    ['Ramadan, M. M.', 1],
    ['Shimura, S. & Egusa, S.', 1],
    ['Siddiqi, Ather H. & Cable, Raymond M.', 2],
    ['Wang, P. - q.', 2],
    ['Yamaguti, S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    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);