function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alekseev, Vitalii I. & Tomaszewska, Wioletta', 16],
    ['Arriaga-Varela, Emmanuel & Tomaszewska, Wioletta', 21],
    ['Arriaga-Varela, Emmanuel & Tomaszewska, Wioletta & Huo, Lizhi', 9],
    ['Chang, Ling-Xiao & Bi, Wen-Xuan & Ren, Guo-Dong', 10],
    ['Chang, Ling-Xiao & Ren, Guo-Dong', 6],
    ['Delgado, Juan A. & Palma, Ricardo L.', 17],
    ['Esser, Jens', 6],
    ['Leschen, Richard A. B. & Carlton, Christopher E.', 4],
    ['Majka, Christopher G.', 7],
    ['Peck, Stewart B.', 5],
    ['Roubik, David W. & Skelley, Paul E.', 11],
    ['Shockley, Floyd W.', 3],
    ['Tomaszewska, Wioletta', 8],
    ['Yoshitomi, Hiroyuki & Pham, Thai Hong', 4],
    ['Yoshitomi, Hiroyuki & Sogoh, Koichi', 4],
    ['Other (34)', 47]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=178)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);