function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agassiz, David J. L.', 5],
    ['Dubatolov, V. V. & Zinchenko, V. K & Ustjuzhanin, P. Ya.', 1],
    ['Na, Sol-Moon & Bae, Yang-Seop', 7],
    ['Ponomarenko, Margarita G. & Beljaev, Evgeny A.', 1],
    ['Sohn, Jae-Cheon & Wu, Chun-Sheng & Han, Hui-Lin', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);