function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barrientos, Jose A. & Prieto, Carlos E. & Pina, Silvia', 1],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 2],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 2],
    ['Dean, David Allen', 5],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 4],
    ['Durán-Barrón, CÉSAR G. & Rosas, MARÍA V.', 1],
    ['Esyunin, S. L. & Kazantsev, D. K', 1],
    ['Gao, Cai-Xia & Li, Shu-Qiang', 1],
    ['Isaia, Marco & Paschetta, Mauro & Chiarle, Alberto', 2],
    ['Lin, Yejie & Wu, Lingbing & Cai, Ducheng & Li, Shuqiang', 1],
    ['Marjan Komnenov & Eva Pitta & Konstantina Zografou', 1],
    ['Paquin, Pierre & Dupérré, Nadine', 1],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 1],
    ['Rodrigues, Everton Nei Lopes & Marta, Kimberly S.', 7],
    ['Seropian, Armen & Bulbulashvili, Natalia & Krammer, Hans-Joachim', 1],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    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);