function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barrion, A. T. & Litsinger, J. A.', 1],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 4],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 4],
    ['D. MORITZ WAGNER', 1],
    ['Danilov, S. N.', 5],
    ['Dean, David Allen', 4],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 6],
    ['Isaia, Marco & Paschetta, Mauro & Chiarle, Alberto', 2],
    ['Marjan Komnenov & Eva Pitta & Konstantina Zografou', 3],
    ['Marusik, Yuri M. & Koponen, Seppo', 3],
    ['Marusik, Yuri M. & Omelko, Mikhail M. & Koponen, Seppo', 2],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 3],
    ['Wang, Lu-Yu & Chen, Hui-Ming & Zhou, Ke-Xin & Zhang, Feng', 3],
    ['Wang, Lu-Yu & Zhang, Feng & Zhang, Zhi-Sheng', 2],
    ['Zamani, Alireza & Marusik, Yuri M.', 5],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    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);